Thanks everyone! The pattern was in the beginning of last year at Keepsake Quilting. (Now you all know how long I worked on it!) To make it larger, I used a method that I learned from a book about Reversible Quilts by Sharon Pederson. Actually, I used that method for all the blocks. In the beginning it wasn't so easy (for me), but once you understand it, it is going easy. I had a bit of difficulty with doing the maths part but it ended well.