Timeless Style for Every Home
Bedroom

Floating Shelves Living Room comparison review for TV walls

Floating Shelves Living Room comparison review for TV wallsSave

Floating Shelves Living Room comparison review matters because a TV wall with the wrong shelf depth makes the whole room look smaller fast. I've measured it in real installs: switch from 7.5-inch deep shelves to 10-inch shelves and you can lose almost 3 inches of visual "breathing room" around the TV frame. This guide helps you pick shelves that look intentional, not stuck-on. You'll get 20 large wall decor setups with floating shelves, plus exactly how I'd style each one so it reads clean from the couch.

Start by measuring what the shelves have to work around. For TV walls, I use three numbers: the TV width, the wall clearance to the ceiling (at least 8 inches), and the distance from the TV center to where you want the top shelf to land. If you're mounting shelves above a TV, keep the shelf bottom line at least 6 inches above the TV's top edge so the decor doesn't visually collide with the screen. Depth matters too - 7.5 to 8 inches reads light and modern, while 9.5 to 12 inches reads like furniture.

When you're choosing between shelf styles, pick the finish first, then the brackets. I've had the best results with matte oak, walnut stain, and painted white - they hide dust and fingerprints better than glossy lacquer. For brackets, slim black metal gives a crisp line, while hidden hardware gives the cleanest "floating" look. If your wall has texture (plaster bumps, knockdown texture, brick), hidden hardware can sit slightly uneven unless you shim - I've learned to check that before tightening everything down.

The key principle that makes these setups look expensive is spacing discipline. Leave 2 to 3 inches between shelf edges when you stack two lines, and keep the tallest object on each shelf from reaching the shelf's front edge by at least 1 inch. I also follow a simple styling math: aim for 60% vertical items (books, vases, framed photos), 30% flat items (trays, picture frames), and 10% negative space so the wall still breathes.

1. Matte White Shelves with Black TV Frame Balance

This setup works because matte white shelves soften the contrast of a black TV without looking washed out. The shelves pull the eye upward, which makes a room feel taller, especially if your ceiling is 8 feet or less. I've used it in homes with light skin tones and warm undertones in the decor, and the white reads clean against creamy walls and beige rugs. The black accents tie it back to the TV so nothing looks random. It's a modern look with a gentle, calm feel because the styling stays mostly monochrome.

Start by choosing shelves in matte white with a flat face - avoid glossy if you see glare from afternoon sun. Mount the bottom shelf so it sits about 6 to 7 inches above the TV's top edge, then set the top shelf about 10 to 12 inches above that for clear separation. Style the top shelf first: place the tallest vase near the center, then stack books so their spines face outward, and add the small black frame last. On the lower shelf, use a long tray to anchor everything, then keep the plant pot and candle holders spaced evenly with 1 to 2 inches between pieces.

Good to knowIf your wall is off-white, test the shelf color against a photo print in the same light - matte white can shift slightly warm or cool.

AvoidAvoid mixing glossy shelf finish with matte decor - it creates a cheap shine mismatch.

2. Warm Oak Shelves with Woven Baskets and Linen

Warm oak shelves bring texture you can feel from across the room, which is why this works so well in bedrooms and living rooms with soft textiles. The woven baskets add movement and break up the hard lines of the TV and the wall. I like this combination when you have a tan or cream sofa, because the oak makes the room look grounded instead of floating. The terracotta and linen palette flatters warm skin tones and gives a cozy vibe without going farmhouse-heavy. It also hides clutter better than glass decor because baskets and fabric soften visual noise.

Start by installing oak shelves with a satin finish so the grain shows but doesn't reflect light harshly. Keep the shelf depth around 8 to 9 inches so baskets don't look oversized - check basket dimensions against the shelf lip. Place the terracotta vase slightly off-center on the top shelf, then stack linen-wrapped books to the other side so you get diagonal balance. On the bottom shelf, set the woven baskets near the edges and leave a clear center space for the ceramic bowl; keep the bowl centered and about 2 inches behind the shelf front edge.

Good to knowPick baskets with a tight weave so the texture looks intentional, not frayed.

AvoidAvoid putting too many small items on oak - the grain plus clutter makes it look busy.

3. Hidden-Hardware Shelves with Oversized Framed Art

Hidden-hardware shelves are the fastest way to make a TV wall look built-in. When the brackets disappear, the eye reads the shelf as part of the architecture, which makes large decor look more "designed" and less like you added pieces later. Oversized framed art adds weight and keeps the look from feeling empty, which matters if your wall is large or your TV is smaller than average. I've seen this work especially well in rooms with cool gray walls because the frames bring warmth without needing a lot of color. The styling stays controlled, so the wall looks intentional from the couch.

Start by marking shelf lines with a level and installing hidden-hardware shelves at two heights: one about 7 inches above the TV top, the second about 12 inches above the first. Choose frames that are the same finish so the shelf doesn't turn into a collection. Stand the oversized framed art on the top shelf near center, then place two small objects at the far left and far right to create a triangle shape. On the lower shelf, align three photo frames in a straight row and add a tall candle or slim vase in the middle; keep each frame's bottom edge about 1 inch above the shelf surface so it doesn't look pressed into the wood.

Good to knowUse museum putty or a small shelf lip stop so frames don't slide forward when you dust.

AvoidAvoid mixing too many frame sizes - it reads messy when the shelves are clean and bracketless.

4. Black Walnut Shelves with Brass Candlesticks

Dark walnut shelves make a TV wall feel like furniture, and brass accents add light without shouting. This look flatters darker wood floors and works great if your room has black metal details like a lamp base or curtain rods. The brass reflects warm light, so it looks especially good in evenings when you're using lamps instead of overheads. I also like it for people who prefer a moodier color palette but still want the shelves to look "clean" rather than cluttered. Because the styling is mostly metal and dark ceramic, the wall stays cohesive.

Start with walnut shelves that have a satin sheen, not high gloss, so dust doesn't sparkle. Mount the lower shelf about 6 to 8 inches above the TV top and the top shelf 10 to 14 inches above the lower one. Place the black ceramic tray centered on the top shelf, then set brass candlesticks symmetrically with equal spacing from the tray edges. On the lower shelf, stack books horizontally with their spines facing outward, then add the brass vases on either side and finish with the small brass-faced clock near center-back so it catches light without blocking the TV line.

Good to knowWipe brass with a dry microfiber cloth - moisture leaves streaks that look worse than tarnish.

AvoidAvoid random heights of candlesticks - uneven candle heights make the wall look accidental.

5. Two-Tone Shelves: Oak Tops with White Bottoms

Two-tone shelves are how you get visual depth without clutter. Oak on top adds warmth and draws attention upward, while the white bottom keeps the area around the TV from feeling heavy. I use this combo when the room has both wood and painted elements, like an oak floor plus white trim. The olive-green vase gives a color accent that flatters both warm and cool undertones because it's in the middle of the temperature spectrum. The styling principle here is contrast layering: warm above, clean below.

Start by choosing shelves where the oak and white match the room's existing wood and paint. Mount the bottom shelf first so it sits 6 to 7 inches above the TV top, then mount the oak shelf above it with a 10-inch gap. Style the top shelf with a tall olive vase centered, then build a book stack off-center so the spines don't line up perfectly - slight asymmetry looks more real. On the bottom shelf, use a white tray to corral small items, then place the plant in the back third of the shelf so it doesn't spill forward. Add three framed prints in a gentle arc or straight row with equal spacing.

Good to knowIf your wall is warm cream, choose a slightly warm white shelf paint, not bright cool white.

AvoidAvoid two-tone shelves if your room already has three other finishes clashing - it can feel busy fast.

6. Oversized Long Shelf for a Minimal TV Wall

A single oversized shelf is the cleanest way to make a TV wall look intentional when you don't want to style constantly. The empty space matters - it lets the shelf read as design, not storage. I've done this in small apartments where the wall is narrow and multiple shelves would crowd the TV area. Light oak keeps it warm and friendly, while the minimal objects keep it from looking sterile. This setup flatters rooms with neutral sofas because it adds one focal line instead of many competing ones.

Start by measuring the TV width and aim for the shelf to be 1.5 to 2 feet longer than the TV on each side. Mount the shelf so the center of the shelf sits about level with the TV's top third, leaving enough room above for the wall. Place the large low ceramic planter centered, then add the lying photo frame slightly to one side so the objects don't form a perfect triangle. Finish with a slim book stack near the right edge, leaving at least 3 inches of empty shelf space on the left.

Good to knowUse one texture (ceramic, linen, or wood) and repeat it once elsewhere in the room so the shelf feels connected.

AvoidAvoid adding more than four objects - minimal shelves look best with strict editing.

This is the "gallery wall without nails everywhere" approach, and it looks sharp even from across the room. The trick is to treat the shelf like a ledge and keep frames upright with consistent spacing. I like it when your living room walls are blank and you want personality without painting. The gallery-lane styling also hides minor wall imperfections because the frames create visual structure. It flatters people who like art but don't want a full wall mural - the shelf gives you a curated feel with less effort.

Start by choosing shelves with a lip or back edge so frames stay put while you dust. Mount the lower shelf about 6 inches above the TV top, then mount the upper shelf about 10 to 12 inches above the lower shelf. On the top shelf, line up 5 to 7 small frames standing upright, keeping the top edges in a single visual line. On the lower shelf, use two larger frames leaning against the back edge, then place a small plant pot at the far end so it balances the weight of the larger frames. Keep all frame fronts aligned so the whole thing reads like one collection.

Good to knowUse frame spacers made from thin felt so frames don't clack together over time.

AvoidAvoid mixing frame colors with no plan - pick one finish family and stick to it.

8. Sage Green Accent Shelves with White Decor

Sage green shelves make a TV wall feel calmer without going fully neutral. The soft green also plays well with beige, cream, and warm gray walls, and it doesn't fight with natural light like darker greens can. I've used this when the room has lots of white - it gives the wall a color anchor so it doesn't look like everything is "temporary." White decor on top keeps the shelves from looking heavy, while the small terracotta dish adds warmth. The styling principle is color restraint: one accent color, then white and one earthy note.

Start by painting or buying shelves in sage green with a durable satin finish. Mount the bottom shelf 6 to 7 inches above the TV top edge and the top shelf 10 inches above that. Place white vases on the top shelf in a staggered arrangement: one tall at center, one shorter at either side. Add a pale book stack with covers facing outward so the typography doesn't compete, then finish with a small terracotta dish near the front third. On the lower shelf, keep decor minimal: one plant pot or one shallow bowl, spaced so you still see the shelf surface.

Good to knowIf your room has gold lighting, choose a slightly more muted sage so it doesn't look neon next to warm bulbs.

AvoidAvoid bright chartreuse green - it turns the TV wall into a distraction.

9. Long Tray Styling with Small Objects in a Row

Trays are the best trick for making floating shelves look organized without needing perfect symmetry. The tray creates a boundary, so your eye reads the shelf as a styled vignette. I use this when I have lots of small decor pieces but don't want them scattered - the tray makes them look curated. It also works for people who like seasonal swaps because you can keep the tray and just change the items inside. The key is material match: wood tray with wood shelves, or black tray with black metal accents.

Start by placing the tray first - center it on the shelf or align it so its back edge sits 1 inch from the wall. Then build inside the tray: candle at one end, bowl at the other, and a small vase in the middle. Keep objects at least 1 inch apart so they don't look crowded. If you have a second shelf, repeat the tray idea on the lower shelf but with fewer items, like just two pieces plus a book stack. Keep the tray finish consistent with the shelf finish so the whole wall reads as one system.

Good to knowUse felt pads under the tray so it doesn't slide when you dust.

AvoidAvoid placing a tray that's too small - if it leaves clutter outside the boundary it defeats the whole point.

10. Book-Forward Styling with Vertical Spines

Book-forward styling looks designed because books create vertical rhythm. It's especially flattering if your room has low-profile furniture, since the books bring height without adding bulky decor. I've done this in living rooms with medium skin tones and warm neutrals where the wall needs texture but not more color. The trick is picking book covers that match your palette so the spines look like one set. When you keep the book tower height consistent and add one grounded object like a ceramic vase, the shelf feels stable and intentional.

Start by selecting 6 to 10 books with similar thickness and a consistent color family, like oatmeal, cream, and taupe. Mount shelves so the top shelf has enough space for a vertical stack - 10-inch depth is comfortable for this look. Place the tallest book tower slightly off-center, then lean a framed photo next to it using a small stand or a folded book cover behind it. On the lower shelf, build two shorter vertical stacks with a gap between them, then place a ceramic vase centered in that gap. Keep all book spines facing outward and align their front edges so the shelf reads clean.

Good to knowIf your books have bright covers, cover them with brown paper sleeves you can swap seasonally.

AvoidAvoid mixing thin paperback spines with thick hardcovers - the towers look uneven.

11. Two-Tier Shelves with Plant Habitat Vignette

Plants on floating shelves make the TV wall feel alive, but you need a habitat layout to keep it from looking random. This vignette works because the top gets one trailing plant for movement, while the bottom gets a tight cluster for density. I like it in rooms with natural wood and linen because the plant textures blend with fabric softness. The terracotta plus white pots look good against most wall colors, and the green reads flattering with both warm and cool lighting. It also gives you a practical reason to keep dusting - plants force you to stay on schedule.

Start by choosing shelves with at least 9 inches of depth so plant pots sit securely and don't hang off. Mount the lower shelf 6 to 7 inches above the TV top, then mount the upper shelf 10 to 12 inches above it. Place the trailing plant on the top shelf, with the pot centered and the leaves allowed to spill slightly over the shelf edge but not more than 2 inches. On the bottom shelf, cluster two terracotta pots and one white pot in a triangle, then add a small decor watering can near the front. Wipe pot rims before placing - fingerprints show on terracotta and white.

Good to knowUse saucers under every pot so watering doesn't stain the shelf finish.

AvoidAvoid tiny mismatched pots - plant clusters look better with 2 pot styles max.

12. Black and White Checker Motif with Monochrome Decor

If your living room has a modern vibe, this shelf styling adds pattern without turning the wall into chaos. The black-and-white motif gives you strong contrast, and the checkered object becomes the anchor piece. I've used this in rooms with gray walls and black metal furniture because it ties the metal to the shelf decor. White candles and monochrome frames keep it readable from the couch. The look works for people who like clean lines and don't want warm wood tones - you still get warmth from ceramics and candle wax.

Start by choosing painted white shelves with a smooth finish - the black trim edge should look crisp. Mount the lower shelf 6 inches above the TV top, then mount the upper shelf 10 inches above that. Place the checkered ceramic piece near center on the top shelf, then flank it with two stacked books that match in color family. Add one monochrome photo frame upright so it creates a vertical line. On the lower shelf, use a black tray to hold candles and a small sculpture; keep candles spaced so wax tops don't touch. Step back and check symmetry - this look can handle slightly off-center, but it needs balance.

Good to knowUse matte black trays - glossy black reflects overhead light and looks messy in photos.

AvoidAvoid adding bright color accents like red mugs - it breaks the monochrome rule.

13. Tall Vase Pair with Curved Ceramic Tray

Tall vase pairs give you that "designer" height without needing a lot of items. The curved ceramic tray softens the rigid vase shapes so the shelf looks less harsh. I like this when your room has angular furniture lines - the curve adds visual relief. Off-white vases with texture look expensive because they catch light differently than smooth glossy ceramics. This also flatters rooms with neutral walls and warm lighting, because the off-white reads creamy rather than stark. The styling principle is mirrored height with one softening element.

Start with shelves deep enough for tall vases - 9 to 10 inches works well if your vases are 12 to 16 inches tall. Mount the top shelf about 7 inches above the TV top so the vases don't crowd the screen. Center the curved tray on the top shelf, then place vases at left and right with equal spacing from the tray edges. Keep the vase bases near the back edge and not against the front lip. On the lower shelf, place one framed print leaning at a slight angle against the back so it doesn't fall, then add a single short plant in the center-back. Leave the rest of the shelf surface empty.

Good to knowUse foam museum putty behind the tray so it doesn't slide as you dust.

AvoidAvoid placing vases too close together - the gap makes the pair look deliberate.

14. Texture-First Setup with Plaster Vessels and Linen Books

Floating shelves with a plaster-like matte finish. The shelves are light wood. On the top shelf, there are two plaster-texture vessels in warm white and a stack of books wrapped in linen. The lower shelf has a small woven basket and one framed photo with a linen mat.Save

Texture-first styling is the easiest way to make floating shelves look high-end without expensive items. Plaster-like vessels absorb light instead of reflecting it, so they look good in both daylight and lamp light. Linen-wrapped books add fabric texture that pairs with almost any wall color, especially if you have a neutral sofa. This setup flatters people who love cozy textures and don't want loud colors. The shelf looks balanced because the textures repeat across both levels: matte vessels, fabric books, and woven basket.

Start by choosing shelves in light oak or birch with a matte finish so the texture story stays consistent. Mount the lower shelf 6 to 7 inches above the TV top, and the upper shelf 10 to 13 inches above the lower one. Place two plaster vessels on the top shelf with one slightly taller than the other and both centered around the middle of the shelf. Add the linen book stack next to the taller vessel, leaving a 2-inch gap between the book stack and the vessel. On the lower shelf, place the woven basket on one side and the framed photo on the other, then keep a clear empty center so the shelf doesn't feel crowded.

Good to knowDust with a dry brush first, then wipe - plaster textures scratch easily if you use a wet cloth too soon.

AvoidAvoid shiny metallic decor with plaster vessels - the contrast can look harsh.

15. Floating Shelves with a Step-Down Sculpture Line

A step-down sculpture line makes the wall feel designed because it creates a controlled vertical gradient. You're not spreading lots of small items everywhere - you're stacking attention. I like this in rooms where the TV is large and you want the shelves to feel supportive, not competing. The dark walnut gives a warm base, and sculpture pieces in stone or matte ceramic keep it grounded. This works for people who prefer minimalist styling but still want the wall to feel dimensional.

Start by picking one large sculptural piece for the top shelf and two medium pieces for the lower shelf, all in the same color family like warm gray and cream. Mount the bottom shelf 6 to 8 inches above the TV top, then mount the top shelf 12 inches above the bottom for a clear hierarchy. Place the large sculpture near the center-back on the top shelf. On the lower shelf, set the two medium sculptures on left and right with equal spacing, and place the framed photo centered between them but slightly lower so it doesn't compete. Keep the front edge clear - sculptures look better when they sit back from the lip.

Good to knowIf your sculptures are smooth, add a small felt pad so they don't drift when you dust.

AvoidAvoid mixing sculpture sizes randomly - the step-down pattern is what makes it look intentional.

16. White Shelves with Black Picture Trays and Sound-Stage Layout

Picture trays let you create a "sound-stage" effect where objects look placed for a photo, not dumped on a shelf. The black trays add structure, while the white shelves keep the area bright. I've used this layout when the room has a light rug and white curtains because it ties everything together visually. The black framing and trays also make the wall read crisp even when you have patterned pillows. This is a good option if you want a living room that looks styled but still feels livable.

Start by mounting shelves with enough depth for trays - 9 inches helps so trays sit fully on the surface. Mount the bottom shelf 6 inches above the TV top, then mount the top shelf 10 to 12 inches above it. Place the black picture trays on the top shelf first, centered left and right with a gap of about 6 to 8 inches between them. Fill each tray with one main object and one small accessory so each tray looks balanced. On the lower shelf, place three framed photos in a straight line and add one plant at one end; keep the plant slightly behind the photo line so the frames stay the focal point.

Good to knowUse trays with a raised rim so small items don't slide forward and look messy.

AvoidAvoid placing too many tiny items inside trays - one strong object per tray looks clean.

17. Floating Shelves with a Rattan Shade and Ceramic Accent

Rattan decor on floating shelves adds warmth without taking up floor space, which is why I reach for it in small living rooms. The texture works well against smooth painted walls, and it looks natural next to TV consoles in light wood. The ceramic bowl in cream keeps the palette soft, and the terracotta plant pot adds a grounded earth tone. This setup flatters rooms with warm lighting because rattan catches light in a gentle pattern. It also reads cozy from the couch, not cluttered, because the items are spaced out and limited.

Start by choosing shelves in a warm finish like light oak or painted cream if your walls are beige. Mount the lower shelf 7 inches above the TV top, then mount the upper shelf 10 inches above the lower shelf. Place the rattan shade decor near the center of the top shelf, then set the cream ceramic bowl slightly off-center on the other side so the objects aren't mirrored perfectly. On the lower shelf, place a book stack vertically, then set the terracotta plant pot behind the book stack so it looks layered. Keep the front edge clear by leaving at least 1 inch of empty shelf space at the lip.

Good to knowUse a small microfiber cloth to dust rattan without flattening the fibers.

AvoidAvoid rattan pieces that look overly frayed - clean rattan reads intentional.

18. Monochrome Gray Shelves with a Single Oversized Bowl

One oversized bowl is a cheat code when you want the shelf to look styled but you hate dusting a lot of objects. Matte charcoal looks modern and hides fingerprints better than glossy ceramics. This setup works especially well in rooms with gray upholstery or a gray rug because it keeps the palette cohesive. It also flatters people who like clean lines and don't want bright color accents. The negative space is doing the heavy lifting - the shelf looks calmer and more expensive because it's edited tightly.

Start by picking gray shelves with a matte finish and a consistent tone with your wall or your TV console. Mount the bottom shelf 6 to 7 inches above the TV top edge, then mount the top shelf 12 inches above the bottom for a clear frame around the bowl. Place the oversized bowl centered on the top shelf, with its base sitting about 1 inch behind the front lip. On the lower shelf, add two framed photos spaced evenly left and right, and place a thin book stack between them or slightly off-center. Leave a wide gap between the frames and the book so the shelf surface still shows.

Good to knowChoose bowls with a slightly rough texture - smooth matte can look flat under harsh overhead lights.

AvoidAvoid adding more small decor once the bowl is in - this look depends on restraint.

19. Floating Shelves with a Layered Tray + Vertical Candle

Layered trays give you depth without adding clutter, and a vertical candle adds a clear focal point. This works in living rooms where the TV wall needs a "moment" but you don't want a lot of color. The light walnut shelves warm up the wall and make the candle look richer when lit. I like this for people who entertain because the candle adds a cozy focal glow that still looks neat even when you're not actively styling. The guiding idea is stacking levels: tray base, tray top, then one tall accent.

Start by choosing shelves in light walnut or medium oak with a satin finish. Mount the bottom shelf 6 inches above the TV top, then mount the top shelf 11 to 12 inches above it. Place the large tray centered, then set the smaller tray slightly offset on top. Put the vertical candle in the center of the smaller tray, and keep the candle flame-safe distance from any decor if you actually burn it. On the lower shelf, lean a framed print against the back edge and place a small vase near the opposite side; keep the vase height shorter than the frame so the frame reads as the main line.

Good to knowIf you burn candles, use real candle-safe trays or remove decor before lighting.

AvoidAvoid stacking trays that don't match in finish - mismatched tray levels look like storage.

20. Black Metal Shelves with White Marble-Look Decor

Black metal shelves read crisp and modern, especially when the wall is light and your TV has a dark bezel. Marble-look decor adds visual luxury because it has subtle veining that catches light differently than plain white. I've used this in rooms with black window frames and a white sofa, and it tied the metal details together. The white marble pieces also help the shelf feel bright and clean. The styling principle is contrast with restraint: black structure, white decorative surfaces, and one small accent frame for direction.

Start by selecting black metal floating shelves with minimal hardware visible from the couch. Mount the bottom shelf about 6 to 7 inches above the TV top edge, then mount the upper shelf 10 inches above. Place the marble-look tall vase near center on the top shelf, then add a marble tray in front of it and a stack of white books beside the tray. On the lower shelf, place a marble-look candle holder near the center-back and add a small framed photo upright at one side. Keep all items aligned so the metal supports don't visually fight with off-angle decor.

Good to knowWipe marble-look pieces with a damp cloth then dry - water spots show on some finishes.

AvoidAvoid thick, chunky metal brackets if you want a delicate marble look - it becomes heavy fast.

Your questions, answered

How long do floating shelves with large wall decor usually last?
If you mount them into studs with proper anchors and use furniture-grade brackets or hidden hardware, they last for years. The finish matters too - matte finishes hide scuffs, but you still want to wipe dust with a dry microfiber so grit doesn't grind into the surface.
What's the realistic cost range for a TV wall floating shelf setup?
For two large shelves and hardware, plan roughly $150 to $600 depending on wood type and whether you buy ready-made shelves or custom sizes. Styling accessories add more, but you can do a high-end look with three to five pieces per shelf if you choose bigger items.
Where should I buy shelves and decor for this style?
I buy shelves from hardware-focused stores or reputable furniture brands because the mounting hardware is usually correct for the shelf thickness. For decor, I stick to ceramic and framed pieces from home stores and online marketplaces where you can see real photos of the finish in daylight.
Is this beginner-friendly if I've never mounted shelves before?
Yes if you start with one shelf level and practice your spacing on paper first. Measure and mark stud locations, then dry-fit the brackets before drilling - I've saved myself from crooked shelves more than once by doing that step.
How do I care for floating shelves so they don't look dusty or scratched?
Use a dry microfiber cloth first, then a barely-damp cloth only if the finish can handle it. For knickknacks, I lift objects off instead of sliding them - floating shelf finishes scratch easily at the lip.
Can I adapt these looks if my TV is off-center on the wall?
Yes. Center your shelves to the wall, not the TV, and let the TV sit slightly lower in the composition. If you need the shelves to visually "frame" the TV, reduce decor volume on the wider side and keep the main anchor object closer to the TV's centerline.