I just discovered spray chalk! It's great!! works like spray paint and marks your quilt very quickly and easily. It washes right out, too. In the quilting tools section at Joann's and it comes in white or light blue. kind of expensive, so I use my coupons on it. But what a time and hassle saver. I also use Chacoliners. They are a chalk marking tool that has ground chalk inside and a little wheel at the end that dispenses it as you roll it along your fabric. Much easier to use than a chalk pencil.