Firstly, since this was posed as a question, then the answer is "NO" you cannot sell any derivative texture "based" on another texture, no matter how much it is edited. Also, even if it could not be recognized as the original (and I believe in this case it would be easily recognized), no one would really want to buy such a set due to the potential copyright issues it may have. ..and finally, selling anything based on another texture is no way to build a good reputation, and if a copyright complaint comes out of it in the end, then your reputation would be completely shot anyway. So it is always better just to make your own original works. Rawn