agree with color, and enlarge the scale of the groundtexture - because now it's like small squuares on the ground if you understand what I mean. Now your using like 1m or 2m for the scale. Try use like 6-10m on the groundtexture ;)
in my opinion its overshrunken, to fast (wich i think is making it more straight then anything else), and why such controlplacements like 5 (in front of feature and not behind) and 6 wich is visuable from far away