Can you post more pictures of the room so we can see the whole thing?

I'd start by finding a nice bright piece of art work to go above the couch. Find something that you're going to enjoy looking at for years to come, and that reflects your personality.

If you can afford it, get a bigger rug. You want it to go under the front of the couch. You probably need an 8x10' rug if not bigger depending on the size of the room.

You can add a bright piece of modern artwork behind your couch to complement your current color scheme. Here are a few examples of handmade artwork that could add excitement and intrigue to your space.