"The main goal of this article/tutorial is to give you a few hints and tricks that might help you to make your own textures look better. What you'll read are things other people taught me, or that I had to discover for myself. They are not the only way to handle some of the problems, but over the years I've found that these work best."
Code:
http://features.cgsociety.org/story_custom.php?story_id=4678
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