I think there was a tutorial on her about using them. I also think she used aloe vera to wet it for blending the color

Good luck to all you painting ladies- I have seen enough to make me think this is waaaay too much work for me to try!!!

I took a class coloring fabric pictures. We used clear aloe instead of water and the outline was drawn over with a matching clear wax crayon (the type found in the Easter Egg dye kits) then pressed to melt the wax. The wax kept the color from bleeding pass the wax outline. This was a long time ago so there probably is a better way of doing it.