I've been teaching the Westalee Template class where I work, and I am really enjoying it! There is a learning curve, and you really need some good traction on the back of your templates. They come with the sticky back rubber shelf liner, but you can use anything you put on the back of your regular acrylic rulers. We've found that a dab of hot glue gives you some good traction, but it comes off easily. The other thing that takes practice is moving the quilt, without moving the ruler on the quilt. You have to move the quilt, but hold the ruler gently. Here's a picture of some samples.