I have been using freezer paper ironed onto the wrong side. I HAD been basting thru, until a friend showed me what she was doing using plastic templates. I iron the freezer paper on, making sure that I then starch the fabric so that it has some body. Finger press each side down on the back side, which will make creases that will then form nice mitered corners, which when I baste, I baste the miter, only thru the fabric. It is said the freezer paper can be reused, but since I have easy access to a commercial die cutting machine in the high school, and freezer paper is cheap, I haven't tried it yet, but I have kept them. HTH... ask if you have questions and I will try to explain a little more