I've done the crayon on muslin and it really works well. Just follow the directions given in the above posts. I had ironed the muslin to freezer paper before tracing the picture. Then the children used Crayola crayons -- the regular ones (not the washable). Some of them tried the texturizing described as above and it was very interesting. After the coloring was completed we ironed onto brown paper sacks until all of the wax and excess color was off. It's a good idea to protect your ironing board cover.