I think I made one like this about 20 years ago. If i remember correctly it was from a magazine called Quilt. They had a feature of easy patterns by Sunbonnet Sue or something like this. You start with a 2 1/2 inch 90 degree diamond and work it around just like a regular log cabin-however many colors you want. I probably don't have the instructions anymore but maybe from this someone can help you figure it out.