From what I see on the screens this is a very good attempt for a first map! I really like the third screenshot. The lights are simple but very well placed.

For the other screenshots all I can say is that you have to light the ground brighter. Much brighter. People don't like to run on nearly black surfaces where they can't see where they are going and where enemies can "hide" in the middle of a street because it's so dark. Make sure the floor is the brightest part of the map in a night/evening map. Even if it means cutting some eyecandy atmosphere.

Remember sunlight and shiny monitor screens are a deadly combination that keeps darker maps from beeing playe on servers.

Well, I am proud as punch to see an unknown who knows how to post decent images. I have seen way to many grandiose maps to get to overly worked up over a larger than life map though.

Without a download link, thats about all you'll expect. As to the content of the screens, I like what I see.