Help- Living Room in need of attention

I have been trying to rearrange my living room since about 2 months after I moved in (over a year ago)

It is an awkward room with no walls lots of windows and a 20 + foot ceiling.... lots of space to fill.

We have not painted these walls yet, so a lot of it is that it looks bare.

I moved the couch to the only full wall in the room, added a sofa table behind it thinking that would gift it some dimension on this giant bare wall...

I think it looks lost....
Help

I want to replace the pics above the couch, but at a loss on what to put there... shelves maybe? one big piece of art??

I love the new layout of the room, but this wall needs help....

Signed, desperately need a decorator