Ideas for the living room? And the fireplace? The TV will go above the fireplace. Any cool not too expensive websites to use for decor on walls.

The other two pictures is my bedroom. It is big room. I want a tv, couch, and a bed in there. Any ideas there?
When you enter thru the door, the room opens up. And u see the big wall.

Middle of the wall there's some space that comes out if you see in the picture. I can utilize that somehow. It is throughout the wall.