My mom and her sister started a stamped design state flower quilt back in the 1930's that you colored the flowers with regular crayon, ironed the square between two pieces of waxed paper, then hand embroidered the details (outline stitch, french knots, etc.) In the mid 1960's I helped finish this quilt top ...they had only done about 1/2 - 2/3 of the squares, plus I added green sashing...as a home ec project, then a friend of my mom's quilted it. My hubby and I used it until the fabric started wearing thin at the edges...probably at least 15 - 20 years. And the crayon part did fine...actually held up better than the rest of the muslin since it coated it and helped preserve the fibers. I still had it folded over a quilt rack when our house burned several years ago.