Thanks Del. I just don't have the talent to do stuff like this freehanded (or much for that matter!), so will be doing it all in GIMP anyway.
Tablet: check.... got one a few weeks ago specifically for rivers. After playing with ISO mountains and smudges, it is a vital when trying to erase or smudge and be precise. I just can't do that with the mouse without tons of undos.
Joe
My Finished Maps
Works in Progress(or abandoned tests)
My Tutorials:
Explanation of Layer Masks in GIMP
How to create ISO Mountains in GIMP/PS using the Smudge tool
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Unless otherwise stated by me in the post, all work is licensed under a Creative Commons Attribution-Noncommercial 3.0 United States License.