I am trying to find the video tutorial which shows how to make a quilt block using just 3 seams. I forgot where I saved that. The woman begins with 5 pieces of fabric; 4 of one color and l of another. After sewing the 2 seams she manipulates the sewn piece and sews another seam. When she opens the block, it has a small block in the center on point. Can anyone help!Thanks.