i reckon this terrain is for some kind of "apocalypse" map in our time ?
In this case i wouldnt use so much green trees (some of them are pretty bright) give the map more of a drama feeling. Also get rid of those wooden building
Furthermore use some farn doodads to cover some buildings. (like roots growing up the house)
Maybe u also could recolor the stones and those steal pipes they are bit bright.
Also im worried about having to much trees in your game but it depends on which kinda game this gonna be.
so far i like this terrain u might wanna tell us what kinda map this will be ?
+rep keep up the work