Have you blurred the background in PS? If so, I think you shouldn't have, because it doesn't really look all that good when you view the image closely. As long as I'm starting with the negatives, I might as well mention the cut-off landing pod down at the bottom, and the other pods are just about touching the edge of the photo; it hurts the composition.
Now to the positives. What I find very interesting here that it seems to be completely devoid of scale. I honestly can't tell whether this was a large model you viewed from a balcony, or a small model two feet high. I'm quite intrigued about this.
Lighting can get difficult in these sort of rooms, you have handled that well IMO. Maybe if you adjust balance the white point in PS somehow, to turn the astronauts truly white, that would be even better. Out of curiosity, did you use flash?