I did this a long time ago with my class I was student teaching in, but we drew on paper with fabric crayons, then ironed the pictures on. The only thing you have to watch is lettering comes out backwards. I had them go to the window and place their drawing on the glass, and they wrote their names in pencil on the back, then traced over it on the right side with crayon, the lettering would be reversed. When you iron it on, it is reversed again and is correctly written. We made a keepsake quilt for my supervising teacher, she loved it!