Backstitch symbolizes a sewing technique that involves making small up and down stitches in order to securely fasten two material pieces together. This approach provides durability and prevents the fabric from unraveling. The overcast is used for a variety of stitching projects, such as sewing the hem, stitching appliques, or even creating blankets. It gives a tidy and professional look for the finished piece.
How to Whipstitch with Pictures wikiHow