I'm with Pickins, it would be nice if there is a tutorial about using a 12-1/2 inch square or ruler. I use my mat because it is easier for me and I also use the same ruler for the project I'm making. So I hope there is a tutorial coming soon. I square as I go also after learning the hard way but maybe someone can make it easier. This forum is great and I have learned so many things I had questions on or things I never thought of. Thanks to everyone!!