Nice, like i previously stated. But theres one think that i dislike. It's the ramp which goes from mid to bases. It's only a chunk! Maybe make it like a board and give it trimmings to the edges from other metal, like in Abandon. Then put wooden pillars under it.
Other things are that u can't step the first stair and you should maybe add few grens to the mid. otherwise it's pretty hard to take campers out from the flag (or to me it was)