I love the tree circle but it is way too high up. Artwork should be hung at eye-level. Put it on the wall in the living room area (if you agree to straighten the TV).

You didn't ask, but I will (haha) Can you turn the dining table so it runs parallel to the back of your couch? This would give you room to pull the couch back so you can enlarge the living room area. I can't see the entire room, is there a reason TV is angled--is there another window you are working around? Pull the TV out of the corner and set it straight on the wall to your right as we look at the room from this picture. Now move the couch to where the chairs are and the chairs to where the couch is. This will give you a larger opening to get into the room.

Extend the curtain rod to its fullest length and add a couple more matching curtain panels to it.

Then open them up so none of the window is covered; it will give the illusion of a bigger window.

Let me know if any of these ideas help. Have fun with it in whatever you do with the rooms.

Pictures of the entire room would be helpful.

I agree that above-the-tv needs no decor And the tree circle is waaaay too high. Just because the wall is tall does not mean it needs to be filled.

Draw an imaginary line (use blue painters tape to visualize) across the wall from the corner on the left. You decorate below that line. Agree with misecretary about the curtain rod and adding more panels for a fuller look, actually panels in the trim color in a sturdier fabric such as linen would be better. Once the window is addressed decide whether the tree looks better beside the window or on the right hand wall. Get a couple of pillows and a throw in the blue/gray or red from the rug