I would add artwork to the wall that your timber is flowing into: they are creating a sight line and encouraging people to look at that wall.

I specialize in large artwork, and have many colors and sizes to choose from. All listed here: https://www.etsy.com/shop/shoagallery

Some samples below. Enjoy decorating!

HI -- You can put a pair of paintings one on each wall or prefer one big painting on the left wall . Pull the sofa out from the wall a little . That will make the room look a little bigger and the sofa looks so tight against the wall now.

If you do not want to invest in big art, you could create a gallery wall. You can do this on one or both walls.

all contemporary ideas.

I would take the paint back out and put the darker tone on the lighter.. subtle, original, like a kid botched the job. then paint a white frame around it. ultra-contemparary wall art. good luck!

I think my first question is: which side of the couch faces a window?
Thinking that your point of view in the picture is facing the window id consider making that the main wall for visual interest. Add something different but large. Maybe sculptural like a large wood medallion? Maybe a tall weaving? (Think west elm) the right side i would consider adding a small sofa table behind the sofa, could be as narrow as 6" but it breaks up the forced corner feel and adds a space for a lamp, pictures, a glass of wine..... And on that wall above i would add something with reflection. Like a mirror or glass framed pictures. Doesn't have to be something large but the correct height above the sofa table is important.

Just idea

Large piece of Art will definitely enhance the look ....gives your room a life also add more colors to your room...here's some suggestion for your wall...for more artwork check my shop too..

https://www.etsy.com/shop/PooArtGallery?ref=pr_shop_more

You can check my site for original art: Below are a few that might look nice in your space. http://www.houzz.com/projects/1295077/art-original-abstract-paintings