I use copy paper, although I have the proper foundation paper, purely because it's so much cheaper and as I love to PP every penny saved etc. One of the ladies here mentioned a light box but I found a much easier solution, PINS I pin along the line that I have to sew next and position my fabric to those, I also don't worry about larger pieces of fabrics as I do a lot of PP and Crumb quilting, and the tiny scraps makes Fur-baby beds so nothing's wasted. There is no way IMO that any other type of quilting will give you as pretty a cushion design as this one. One of my earlier quilting projects and although there are errors it's still my favourite cushion.