Mitering is not problem, once you learn the trick, it's easy peasy. The one problem I had in the beginning was not allowing enough fabric to carry over to do the mitering. But it was a lesson learned and now I allow extra. I think cause Math was one of my strongest subjects and I had a lot of practice with angels when remolding my house, it kind of comes natural, but I still had to practice. . Take a large square and practice putting boarders and making a miter. The light bulb will go off and you're off and running. If the above tutorial doesn't help, there are many more.