As some of you will notice i ve made this map on 1.6 before*,but i just thought it would be a great idea to make it on source because of the graphics.
By the way this is my first map on source so don't hate.
*There is actually more stuff than the 1.6 Version.
Pros: Lighting and different height levels
Cons: o Layout is just a box with different standard shapes in it
o no atmosphere
o map looks random
o textures don't go well with each other
o no setting
Improvements: Try removing the box and instead make the map a series of corridors and halls. That will make it look way better.
Also, choose a setting before starting to map. This could have been an obstacle course militia-style or at least a military training area somewhere in a desert.