Smocking is often a layout strategy to manage the fullness inside of a bit of cloth, with beautiful embroidery stitches. To do smocking, normal gathers (or pleats) are taken on the fabric with very long stitches over the back and very little stitches inside the front. Air covered yarn (ACY) https://coveredspandexyarn04825.blogpayz.com/32405672/the-ultimate-guide-to-covered-spandex-yarn