Oh no! I am so sorry.
I made a whole queen sized quilt with crayola leaf blocks--you have to heat set them--the heat of the iron melts the wax onto your paper towel, leaving behind the pigment of the crayon. It has to be Crayola brand crayons....the heavier they color, the more you have to iron to remove the wax and leave the pigment.
Any chance you can save what you have already done??