So glad you asked! The article referenced above is certainly one alternative. Thanks to Vance for the link.
There is an article in the archives of our Painting area that covers this subject:
http://www.bellaonline.com/articles/art48223.asp.
If this doesn't answer your questions, feel free to ask them here. I learned long ago that the only "dumb" question is the one I don't ask!
As a note before going to the article, I would consider using the special paints referenced there. From experience, I can tell you that they are VERY permanent after they are heat set according to the directions. There is a link at the bottom of the article to the site where they are available.
Good luck & happy painting.