I really like it, but I have some criticism. The red car really draws the eye because it's opposing the green/brown color of the for-ground. The second I loaded up the pic I saw the car first, and because of that there's something that makes this picture look 'weird'. I'm not saying it looks bad (because it's beautifully mapped), but there's an oddity to it. Judging from the picture alone (and assuming that the car doesn't move, or has importance) I'd say remove the car or change it's color to a something similar to the for-ground.
Now, if the car is supposed to draw the eye, then I'd say it's doing it's job well. And if that's the case it just look strange because this is a still image.
I was going to say that the yellow and white building have the same issue, but I'm going to assume it's just a matter of perspective. Still, I'd keep this into consideration. I don't want to tell you how to do your job, and am guessing you've already considered things like this. However, if not, it's food for thought. :)
Anyways, it looks really great (structurally). Keep up the great work!
EDIT: The white on green/brown for-ground actually does look strange. I'd argue that the grey wall is sorta white, but it's more like a dirty brown. The white next to the brown building isn't that big of a deal because it's not too eye-catching, but it looks a little weird with the bloom effect.
Spooboy
Jamie joined
My names Jamie, but I prefer to be called SpooBoy. I play games, CSS and L4D2 mainly. I work for Opposing Forces 2 as their storyboard consultant, if you got any questions about the mod don't be shy to ask. Anyways if your looking at my profile I've either pissed you off or got your attention by pissing someone else off, please, comment.