It seems that you incorporated the best parts in all the maps that you liked, and just slapped them together not so nicely. The map is okay, not one of my top, but just okay.

A big problem I see with many maps on here are either flow or ammo. Out of 5 I give you a 4 for the flow and a 4.5 for ammo.

The map does a good job having the player follow really well into other parts of the map, also ammo is always plentiful.

As far as creativity is concerned, it could've helped to have more areas in the map, lighting could've been a bit more varied. The look of the map is very bland.

I'd say you seem to have the basics down with map creation, now you can step it up from here.