Actually, your terrain is really, really, really, really, I mean really messy. The tiles clashed each other, the environment seems kinda random and doodad placement is just bad. Everytime you use blizzard's rock always lower it using CTRL+PG DWN to hide those awful excess parts that just look ridiculously aweful and the trees you used in the desert just add to the messiness of the already messy terrain.
Actually your terrain on the start is neat and nice I just don't know what kind of nuclear explosion happened on the desert area.