wow. that is one incredibly low to the ground plane
I agree but form looking at the pics it looks about right.
I also agree with the comment about the window frames, they could do with being pushed out a bit more.
I also agree (I'm very agreeable today! 
) with what dave said about the reflection. It's raytracing for the sake of it and the floor of an aircraft hangar wouldn't be shiny shiny it would be dull and oil stained.
It's got a good shape so far though, is it subdiv or poly only?
Technical Director - Framestore
Currently working on: Your Highness
IMDB