thanks guys! with "texture stitching" I mean, uh.. ok i'll try to explain. I pick a texture-picture that i like Basically any grunge, nature or whatever texture could be usefull. For personal-use-license there are many around the web. Then i desaturate it and feather the edges with a soft-brush eraser. Then I scale/warp/rotate it to fit the part of the map I want it. I then use that texture in an overlay-layer on my map (as a bump-map so to speak). I then rinse and repeat (with overlapping parts for smooth terrain transitions) untill I get something I like. cheers!