I have seen a few people suggest using the Felimage noise plug in for gimp. It may be just because I am tired at the moment - fighting sleep to do some "last minute" cartography - but I can't seem to figure out how to use this plug in once it is dropped in Gimp's plug in folder.
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Nevermind. I figured it out.
filters > render > felimage > noise
Last edited by Sam Conifer; 02-17-2011 at 09:55 AM.