7 techniques that will help you a lot when it comes to sewing. 1) Encased Elastic Band 2) Zigzag stitching Elastic Band and TopStitching. 3) Zigzag stitching elastib band and topstitching with elastic thread. 4) Elastic gathering and Shirring. 5) Gathering and shirring with elastic thread. 6) Elastic channel 7) Elastic scrunchie.