If it ends up actually being used I will address those concerns and look at doing the lighting more universally. It was very admittedly rushed that I put any 'shadows' behind items at all after pulling them in for a quick scene juxtaposition. It's no excuse, but that was not as much the focus of what it was needed for.

Thanks guys!

I agree. The shadows imply that all the objects have the same depth. Cute designs though.

On their own they are quite nice, but they are obviously of different scale - all tables are of different height, picture hangs higer than the window. It is not very hard to fix, though. Also I think that one source of shadow and bigger shadows would work better to bring depth to picture.