I use exam table paper from the Medical Supply Store. A roll lasts forever and is inexpensive. It's sort of "crepe paper like" so holds to the fabric without a lot of slipping until you pin it in place (that was as clear as mud); it removes easily, too. I've also had trouble with blue "removable" marking pens and I don't heat set them. Maybe we got a bad batch. Exam table paper is also easy to trace designs because you can see through it.