I'm going to turn you down for now - you don't have enough details. Sure you built something huge, and the maze is really nice, but the outside of the building has mostly flat grass, and the large room is nice, but it's mostly the same couple of blocks and just looks vast and empty. The maze room has the same problems - 2-3 differnet blocks and nothing going on to make someone think that you put time into the details. I'm going to deny and suggest you add a lot more to it and reapply in 30 or more days.
