I wish I could do a tutorial, everyone is always looking for ways to make nice hand drawn mountains quickly.. but there's nothing quick about it this, and it's nothing more than draw the shape of the mountain, then start shading it

I might do a set of brushes after I'm done this though. I figure if I do 20 or so, that should give enough variation to look good when slapped all over.

*ponders doing that for this map now*