Some opinions on this so far

meh... this is like, my second time posting terrain.
Be advised I'm no terrain pro

Looks good. I saw a few things you can make better tho:
1. Your river looks to straigth, you might wanna make a little more "corner" in it.
2. Your watch towers are flying.

Well thats about it ^^.

well thats because they are flying watch towers :D jk, thanks for the suggestions

its got a nice composition so far
suggestions;
put a small picth and roll on those trees (say 0.15.0.20), just so they tilt a little with the hill. then to cover up the base of the trees floating place some rocks at their roots (no pathing), perhaps the ashenvale one tinted slightly orange)
The river is good, and i acctualy quite like the white cliffs. however, i feel that the sea weed you used is out of place, id suggest viny plants, and some thory planys on the cliffs (again tinted slightly orange)
i like the rock chunks, but i feel the terrain could do with more of them.

hope this helps