I must say, that overview sucks. Very small.
Ok...
Looks like an interesting layout. Yay, infiltration maps
. Well, I'm sorry to be lame, but until you get a better screenshot, *shrug*. Get a screenshot without the spawns and objects showing. Then we could see your map.
Yep.
Edit:Alright, fine I'll comment this map a little more. This looks heavily inspired by inf_Fortress if I'm not correct? On the outside of the fortress, you need at least one opening into the main base. Also, I'd take the whole base, move it up a bit and add another level of stuff to the fortress. The flag is too near the main ground of the map. Just, try not to make it too similar to inf_Fortress.
Here is a representation of what I kind of mean: