I have always loved the style of Faerun Maps. I'd like to ask if anyone here knows how they were made, or if they could give me some tips to duplicate the style? I have an idea on how the forests were made, maybe with a pattern and mask? But how were the mountains made? Are they a certain brush? Can they be made into brushes, or are they a pattern also? The mountains are confusing me, I can't figure out how to do them without being freehand.
http://www.pocketplane.net/volothamp...aerunlarge.jpg

Thank you for any help.