I have tried alot of the ones out there. I have paint.net, gimp, ultrapaint, and I am currently playing with the trial of Corel. So far I really like the corel and may have to purchase it. I have converted the picture above with Corel and so far so good, I still have some cleaning up to do though. I just printed the original and the pattern out and i am going to do some work the old fashioned way then scan the picture back into the computer. When I get the pattern finished I will post it for tips and to make sure I havent missed anything. As far as the tutorial have you checked Youtube. I want to say that there is a video about Gimp on there.