It was in the May/June issue of quiltmaker magazine, but the concept is simple. You start with a square, mine were 7 inches, cut it diagonally, insert a 1 inch strip of the contrasting fabric. Cut it diagonally in the other direction, insert a 1 inch strip. Cut it again in half, top to bottom, in goes another 1 inch strip. Lastly, cut it in half horizontally and add the last 1 inch strip. Then trim it up to 6.5 inches.