The bigger mtns come through pretty well but the smaller hill-types just look like stipple (kinda my fault for not yet finding a better way to fake DEMs) so maybe erase them smaller things and leave the larger chunks. You might have to do up another LE filter to get some more mtns to chain together, though (use the lasso tool with a 50 px feather) then the move tool to position them). Looks pretty good with color now.