The back stitch is commonly used for securing two pieces of fabric together. It is a strong stitch. I use it for inside seams where it can’t be seen. I like to double my thread when I do a back stitch, but you don’t have to.  – Abbie How to Sew a Back Stitch Materials: fabric needle thread 1. Thread your needle, then tie a knot in the thread. Make sure that your pieces of fabric are aligned; you can pin them if necessary. Push the needle up through the fabric from the bottom and pull the thread through. 2. […] Read more »