Find a Hello Kitty color book, trace the pictures you would like to use on muslin and color with Crayolas and set the Crayola with a hot iron. If you don't know how to do this, PM me and I will send detariled instructions. I have taught several classes in this technique and made several Crayola quilts. Yes, it will withstand laundering, although you probably should use warm water instead of the hottest water you've got, but even if the colors fade, you can always recolor them and reset them. When my granddaughter was 6, she helped me color the purple cows on our purple cow quilt. The label gives her full credit for her artistry. froggyintexas