My crits would have to be the grain in the shadows under the pictures, the overexposed areas, like the left wall for example, the texture on the desk and its lighting interaction is a little iffy and the casing on the Mac is really really bright, the bed spread is a bit faceted and I can't help but feel the proportions are a bit off, the doorway seems kind of low, I dunno, I'm just getting that feeling. The textures on the dark wood look good, It came out well with this being your first room model/render. Stay on it.