A Buildin In a Building

here is a building I’m working on… It is a lunchroom inside of a production plant.

This is the architects auto cad version that I used as a visual reference:


Here is my first go at it:


my second:


And where I’m at now:


Im not sure how close to realistic it is, but any thoughts on problems you see with it would be appreciated. (feel free to tear it apart, honesty will not hurt my feelings)

I don’t understand why the windows are blurred. it kind of makes it look like brushed polished steel. I think for realism you should actually model the background in.