I made one years ago with 2 colors. I am not sure if that what it was called. Cut 2pieces of fabric one 2 1/2 inches wide by width of fabric and the other 4 1/2 inches wide by width of fabric. Sew strips together then cut thme in 61/2 pieces after they are sewn the sew the blocks together alternating the direction. This is what I did and it came ou pretty good. Just mesure the bed width and decide how wide it has to be and divide the width of the block. I hope this helps you. Good luck. :)