Everything is getting better, don't forget to use raise, noise and other stuffs like that to your terrain, it adds beauty, and don't over do it. Also, try adding atleast 1 artifact drop for creeps, should insert it on the Ursa Warrior. Trees on the early base seems to look unnatural still, try adding it some more trees and make it an uneven in quantity but symmetrical and no spaces in between. Gold mine creeps should atleast be yellow or medium, note that goldmine creeps are suppose to be set to normal to prevent NE race from cheating, this includes the base goldmine creeps. Don't over do making cliffs or heightened land, since this could bother too much when it comes to pathing.