Do not, I repeat DO NOT stitch on the drawn lines when using press-n-seal. My sharpie marker went from the press-n-seal onto the fabric!! You can not get black sharpie out of light colored fabric no matter what you use :)..........
I have heard others use it successfully, but do not know what type of pen they use to draw the design. Any body have any suggestions? The water/air pens don't stick to the stuff, just smear.....