I'm a hobbyist mapper trying to teach myself some new tricks.

I recently read a great post on Jonathan Roberts' site about making mountains: Top Down Hand Drawn Mountains in Gimp or Photoshop.

The first two steps - drawing the ridge lines - have left me flummoxed.

Here's how his look:



Now, just using my mouse and a low-opacity brush tool and/or ink tool, here's how mine look:



Realizing there was an order of magnitude difference, I figured I'd better stop before I hurt myself and ask the pros. How do I get that "hand-crafted" look to my strokes? I'm assuming even without a Wacom tablet there are some setting I can tweak to get it?

Thanks!