I did the exact same thing at a quilt show a couple of years ago. It all looked so simple. I've read the booklet quite a few times and I still don't know what to do. Thank you for the confirmation that I'm not alone when it comes to buying things at quilt shows and then wondering why did I do that. One thing I did buy at a quilt show, and absolutely love, is the slide lock ruler. You put it down on your fabric, press down and it doesn't move so you can make accurate cuts. It was worth every penny.