What Is a Blanket Stitch How To Blanket Stitch TutorialWhipstitch is a stitching technique that involves creating small in-out stitches with the purpose of securely join two fabric pieces together. This technique gives strength and prevents the fabric from unraveling. The join together can be used for a range of stitching projects, such as hemming, sewing appliques, or even creating quilts. It provides a tidy and expert look for the completed piece.