It's made by Beverly (she doesn't say her last name) from Quilt N Bee. To my freezer paper buddies out there...you're welcome! She also tells you where to get the free paper pattern for the quilt hanging behind her (the one on the right). I love this method and wish I'd had it when I did the Oklahoma Beauty blocks although I'm not sure it would work for such skinny points.
If I ever make another one of these quilts, I'm going to try it. Hope you have a great week. XO from Bev