This has been a long time coming and for that I am sorry... but I have started working on the "PS7-OMP". I work in Photoshop 7 because not everyone has a newer version of Photoshop and this cuts down on compatibility issues.
I am not much for typing so I have made a rough video tutorial (Part one & two) and posted it to YouTube here:
PS7-OMP "Part 1" on YouTube
PS7-OMP "Part 2" on YouTube
PS7-OMP "Part 3" on YouTube
To go along with the video here is the .psd file and the brush pre-sets that I am using. This should let everyone (with Photoshop) open the layer styles and play around with the method I am using. I am not sure if you can do this sort of thing in GIMP but it would not surprise me if you can.
Well, After making three parts... I am not sure I have fully explained all of the things you can do with this .psd file. I am sure I will make more videos sometime later (assuming there is interest) to highlight different things you can use the techniques other than making mountains and textured dirt... but for now I will wait to see if anyone likes this method and find out if others would like to add layers, brushes or techniques to the project .psd ...So I really look forward to some of you trying out the .psd file and posting what you come up with.
I am as always open to comments, questions, and critiques ...and "happy mapping"