I think from a technical standpoint (e.g. modeling, texturing, knowledge of the program) I'd say you're very proficient. From an artistic standpoint the image leaves a lot to be desired in terms of visual interest. The issue, after a couple minutes of thinking it over, is that the table looks artificially populated. By that I mean that it looks like the contents weren't placed during natural use, due to a lack of objects and their relative placement. A good tip would be to imagine yourself as a character using this scene. Where would you put things down when you were done with them? Overall, I think it's well done, but is just missing something I can't really figure out.