Well, I was going to suggest the ubiquitous fiddle leaf fern, but looks like you have a cat, and they are toxic to cats. You might Google plants that are non-toxic to cats and see if anything grabs your interest. I think some palms may be ok with cats (and they can grow fairly large), or you might look for a contemporary plant stand and just sit a smaller plant on it -- maybe a giant tropical bromeliad or something along those lines. That said, if your cat is prone to pester plants, it's probably not a good idea to include one in your décor. (Definitely don't put a fake plant in this pretty space.)

I know, this is our first house and you learn a lot! The sectional IS too big. I was thinking about removing the chaise. The bottom part is detachable and then I could have a seamstress shorten the chaise cushion so it is just a L-shaped sectional without the chaise. Then a console table will fit. The TV is centered on the wall now. Are you saying it should be centered with the couch instead?

I'm assuming you're going to keep the console for now. I would move it towards the window with nothing between it and the window. Right now it is just off-center and not looking balanced. Then clear away everything to the right of the TV. The small picture to the left of the window is squashed in and should be moved elsewhere too. No ladder. No plant on the ledge above the window. Keep the focus of the room low. It would be helpful to have a picture of that wall from wider back, because I don't think your large picture should be on that upper wall space. IMO that upper area should be blank and the art work elsewhere, maybe to the left of the TV with a small cabinet under it. I'd also move the small pictures that are on the shelf below the TV. Arrange them on a picture ledge (Ikea has them) in a hallway at eye level. They can't really be seen where they are, and they are too small to look good. Buy 4 wide wood or wicker baskets and put them on those shelves. Empty or with useful stuff in them.

Shelving on either side of the t v would look nice and fill the wall. Move some of the wall art onto the shelves. Also, center the sofa to that wall and move the chair to the left of sofa.