My LQS demo'd this ruler on tool day and it looked like so much fun I signed up for the class. They had a one sheet cardboard pattern for 3.95 that was a slightly different version so I bought that, too. It was very easy to do and I did watch a u tube the night before the class. The first time you cut off the points you really think you are messing up, but the pineapple isn't about points if you look at it. They are a lot of fun!! Just make sure it is the creative grid u tube videos when watching. Use some scraps for a practice run.