Overcast symbolizes a needlework technique which involves creating small in and out stitches in order to tightly join two fabric pieces together. This approach adds strength and avoids the fabric from fraying. The sew together can be used for a selection of sewing projects, like sewing the hem, sewing patches, or even making blankets. It provides a tidy and expert look to the finished piece.

How to Crochet Whip Stitch YouTube