Overall you did quite a good job i think, although some parts of your scene have a very 'cg' look you should try to avoid if you're going for realism. For example, the apples don't look very realistic (like plastic?) and the surface they're standing on needs some work as well, i think it's supposed to be leather but it's a bit too regular, is it procedural?
Some surfaces could also use chamfering, the windows look a bit unrealistic because they're too sharp I think.
The lighting is very well done overall, although I do agree with DAKLOL's comment.
Just another thing that could be changed, i'm not sure, but the black leather chair next to the bed looks a bit small, it could just be me, but it looks a bit out of proportion (compared to the bed)