I recently bought (I think from here ) a marker pen (looks like a highlighter). You mark whatever you need to and then sew. Then...spritz with a little water, and lay the iron on top and abracadabra!!!! In seconds the line is gone! Works great. I just this week used it on making a star to top stitch in the square center of a larger pieced star. Worked great...and the pen was bright green and the fabric was white! I highly recommend that! I also used this same pen with a stencil...and it worked great.