Cherno, I am planning on drawing some height maps and then converting to normals for use with my game's lighting engine, once fully implemented. For now it looks extremely flat but that will be fixed when actually put in the game.
MysteryMeat, as far as being too green, is that more a problem with the actual coloration or rather with the lack of other details? if the former, I'll be able to tweak the colors, and for the latter I'd be able to make variants with decorations or dirt patches.