great advice upthread I'll try to be short, probably repeating several people: -get rid of the white console next to the fireplace/look for smth else instead if you need it there for function -think of other window treatments. curtains? woven blinds? roman shades? any of these will look better. move your sectional a bit from the wall, both to allow room for window treatments and because furniture generally needs at least couple inches to breathe..that wil also make room seem larger -you already purchased the ottoman in the same color and style of the sofa..off white, right? well something different would be better, but it's okay..buy a throw, fold it and put there to break your lines a bit. tray is great too-both for function and beauty. you'll appreciate it when watching this TV -I liked reading how your wife gets her art:) okay..so if there's no real room for other suggestions(I'm also prejudiced against mass produced canvas art..maybe she can be talked into a print instead?..)..put that art there first. Make sure it fits-seems huge?.. Say you go for that a very similar art, you have there-a bit of white, black, brown, indigo blue, fiery yellow white and brown you already have in your room (btw like your furniture) pull your other colors (in pillows and throws and accessories) from that art -deep sophisticated blues, golds. can be metallic accessories (like vases or flower pots?), can be softest fur pillows can be velvet, can be knitted throw. everythhing you buy-make sure it's a different texture..leather is sleek you've got enough of it. Speaking from experience-I also have my fair share of leather:) then look for a big ticket items like curtains and a rug. (or simultaneously..just keep your general scheme in mind). you can decide to make them fairly neutral. repeat the color of the furniture, just different material of course. or go for one vivid deep color but make it a shag rag for example. Don't try to match pattern to art..art has a mind of its own. Look at the room as a whole..what does it ask for? and know yourself of course..say I love many rugs but I don't like to clean them lol. You know whether it's high traffic area, what your habits are, and whether you'll be sad for 5 min if the rug will have spots and then get over it, or will be sad for 5 days. when you buy a side table try, again, to introduce another texture, just different material in this case. maybe wood. maybe ceramics(garden stool?some of these look really modern). every new material you bring creates dimension. Dimension is something you look for when creating spaces. Why? well that what we've used to. Ouside always has it. Even when it's a desert or an ocean. It has depth. we need to recreate it with all sort of ways and means that are availiable to us.. Good luck! will be a cool room edited because of thousand typos..))

Your sectional and rug are fine but then the effect is ruined by the two dark pieces that don't "belong". Could you possibly change the coffee table for one that is glass and metal? It would really open up your room and give a lighter, friendlier ambiance. Try and get one with two levels so the bottom can be used for storing books, which always give more personality to a room. I would put a light blue and beige pillow on your dark chair to give it some relation to the rug and sofa. The wall behind the chair could be used as a gallery wall or try several fairly large and colorful paintings there. Try a large plant or two against that wall also in some beautiful and interesting pots. Instead of the harsh ceiling light have a table lamp and a table with a lamp on it, one by the chair and one by the sectional. Your room will look so much warmer and user friendly.

I recently purchased this one from a local retailer and I love the quality. https://www.hookerfurniture.com/highland-park-round-cocktail-table/5443-80111-1744/iteminformation.aspx I also considered a similar one from Ethan Allen. The top is clear glass even though it doesn't look like it. https://www.ethanallen.com/en_US/shop-furniture-living-room-coffee-tables/heron-round-coffee-table/139271.html?dwvar_139271_finish=184#prefn1=shape&prefv1=Round&start=1

@ Rachel H We've created a layout for you with approximate dimensions from the pictures. So many options for colors that would work with those cushions and that rug! Warm tones of coral/ rust or even mustard would brighten up the room. Once you choose the colors on your chair you could add pillows that reflect those colors. You could place a couple of ottomans that can be moved around wherever required. As @My House says, you could add a slim console table and art/ Mirrours to the long wall by the door and create a nice looking entryway! We have made you another layout here. You can add or replace furniture and move them around to create your own layouts in interactive 3D designs here and also render your own photorealistic images here!