Great work, but since you posted it under realism, there are a few little things which could enhance the realism of this image. The walls could use more typical walltextures instead of the wood that you used now (you don't see wooden walls that often coz it's expensive with that kind of wood). Also the textures on the couch seem to dark at some points. I would lower their specularity maps and then us a self-illumination map on them, so that the black spots become just a bit more visible and the white spots get a little less contrast.
Very nice work here. :)

The texture of the wall looks a bit too big and too tiled to me and the pillows a bit too bend, but for the rest: great scene and I love the lightning and the stuff on the table!

Yeh, I agree with ariaans. The wonky light shade is nice and so is the DoF, but the cushions do look a little...contrived. The stuff on the table is excellent. Nice work.

I agree with the others about the walls, but I think the lighting is pretty good. It seems as though the table lamp is the only thing illuminating this area. The couch coushins (sp?) look alright, but they are bent too much. You should give them slight bends, but put a noise modifier on them to rough them up.

I agree that the cusions need a bit of work ... I was trying to get this image done for a very tight schedule ... around 4 days was the limit actually ... and DatJongetje's comment combined with the wall texture comments... well, the walls in the actual house are pretty much a really thin wood coating ... I don't wanna insult the house or anything, but I'd go so far as to say it's merely stained particle board... and had I gotten the time to actually make the molding around the walls, I would have had more variety of wood panels, but for now all I had time to do is a 6-faced room lol... I might post an image of this later on if I have time to work on it ... hopefully I'll have stuff in there that improves on each comment made here :p ... there's actually a whole bunch of detail I left out of this scene. If I get more time to work on this, rather than the rest of my homework (which is a really really huge 3d project) I should have things such as the lamp cord, the brass L shaped things along the end table, the wood molding along the panels, and I'll add quite a bit more detail to the cusions ... as well as fixing the texture mapping issues noticable on certain sides... thanks for the comments. (and I just love the way my lamp shade looks if I didn't already mention that :P)