I've always found that making the mountains for a map can be the hardest step in a map making process, even after becoming quite proficient. So I decided to make a tutorial detailing how I make my mountains and mountain chains in GIMP and Wilbur. Arsheesh's Eriond tutorial was the base for this process, and I recommend being familiar with it; however, my tutorial can be be followed without too much difficulty even if the Eriond tutorial hasn't been used before.
Enjoy,
L.
Mountains tutorial.pdf