Very nice, looks like you literally compared the pictures every second you were building the map.
Constructive Criticism:
- Not sure as to whether or not the buildings are supposed to be messy. Even if they were, you may want to straighten it up.
- The barriers are low and you have tons of stuff to use, all you have to do it maybe add an extra object at the top to stop grenade jumping.
- It's not easy to add detail with such huge objects, but if you interlock it makes a difference.