muh gawd, beautiful now
the only thing that's wrong with it now is that rock on the far left, it needs another smaller model (or reduce size by a lot)
oh i forgot to say: if this is meant to be a winter (or semi winter) terrain add a snowing weather effect, you could add small patches of snow by the water
and about the texture, use a darker one, i don't think there are many good tiles for mountains.
EDIT - found another thing, the 2nd mountain top from the right, needs more snow, it looks too horizontal.