1. im not feeling the rug next to the bed. id much rather see it tossed. or maybe make the pattern on it simple.
2. couple things you may want to try with the bed. maybe scale it down a little bit. another thing is to dress up the bed. give it a nice looking comforter, or a blanket.
3. id take the poster you can barely see an put it over the bed, an the add either another poster some place else, or like the other person said, an give it a shelf or 2 with things on it.
4, if you wanna mess with the books id give them titles, or cover art, seems like you did this to the book on the night stand.
cant wait to see what direction you are planning on taking.