I agree with everyone else - these are some nice maps. I'm going to have to play around with that old paper tutorial sometime - you got stunning results in that parchement map.
A thought about the forests on your GIMP map. I've found that duplicating the mountain instructions for the forests creates overly exaggerated forests, at least for my tastes. I tweaked the forest steps a bit in my WIP map and found that the forests came out a bit more natural and subtle looking.