I agree, there is not much to be said without more pictures, but looking at what we have, and not knowing the size of your starbust mirrors, I think you could hang them to the right of the TV to fill up approximately the shape I've indicated below. Second point, look for a striking rug that has a similarly natural, organic feel. It could continue your neutrals theme or introduce colour, but I'd definitely go for some kind of organic pattern -- not a geomatric design. I've just come across this one and I love it. https://www.overstock.com/Home-Garden/Hand-Knotted-Roth-Abstract-Pattern-Hemp-Rug-5-x-8/9912730/product.html?refccid=CPCHMYDRCEE2WRKCR4625KZO2Q&searchidx=337&keywords=&refinement=material%3ANatural%20Fiber

Ignore tv unit, matching one arriving this month

Hello! I'm a home stager and to prevent the room from looking over crowded, you can put the lounge chair next to where the bookcase is. If not, a simple rectangular bench will do: https://amzn.to/2Rk3uhM Place a few throw pillows on top of the bench and sit them upwards (and lean them against the wall at an angle) to add some elegance: https://amzn.to/32oWAhz Over by the bookcase, a faux fiddle leaf tree by Nearly Natural will be nice and their quality and shipping is great: https://amzn.to/2FzyxU9 Where the books are, I recommend canvas art or a large mirror in that space. I would remove those books because they look misplaced. The white and tan combination would be beautiful and the comment above about adding a rug with blue hues (preferably navy blue) would compliment the space very well. This one is a great price because 8 by 10 rugs are usually very expensive: https://amzn.to/33m8mZr At Home has some fantastic area rugs as well and they don't cost too much. It will look beautiful afterwards! #affiliatelink

If you don't want builtins, I would use two large matching console or buffet tables with closed storage on each side of the fireplace. Mount the TV on the wall above one of them, and place artwork or a large mirror on the wall above the other. Add art above the fireplace as well. You also need end tables, a table lamp and possibly a floor lamp, but start with the bigger peices.