Im going to experiment with the Crayola Washable Markers. Thanks!

I absolutely love the Crayola Ultra Washable markers. Never had a problem washing them out. I use them fearlessly!

I would test your white fabric with the markers before doing your project. I have had good luck with Dritz purple (disappearing) marker. I have also quilted over (newspaper) paper. I buy the tablets in the crayon department meant for kids. It tears away easily. However, If you are printing the pattern, which I don't recommend, or using a marker, which I don't recommend, sometimes the line from the paper is stuck under the thread and shows. I would use the "punch" method by drawing/printing one page; put the page over 4 or 5 pages; FMQ over the lines without thread to just punch in the holes. Then use the punched paper pattern for your project.