The map looks like it has a lot of prefab buildings. You should cut down on those and try building some structures on your own. You might stumble upon a really cool design. I do like the building you made out of the landing pads. It is a really simple design, but it looks a lot cooler than the buildings. I would add support underneath the building though. It would make it look more realistic. Remember to stop by the Tester's Guild. They can aid you in improving your map's gameplay and aesthetic value. It might be a good idea in the future to stop by there. They might give you some really good ideas on your next map.
Actually i am currently working on a map with that landing pad idea but i agree with knight of order to many prefab buildings but if u need help just send me an invite.