How to Back Stitch - Lesson Two

To finish the square completely, weave the end of the floss threaded in the needle under the back of the stitches and secure the floss. Clip the end of the waste knot and secure that floss end as well. If the end of the floss is a little short, weave your needle first, then thread it with the floss end or use a needle threader to pull the end of the floss under the back of the stitches.