This video teaches how to hide an ending knot in your quilt in order to keep it looking neat. You wrap the thread around the needle, pull it tight, push the needle through about a half inch of the surface of the quilt, and once it comes out the other side, tug on the string gently. There should now be a knot underneath the top layer of fabric. Cut off the tail end of the thread. If the piece of thread is showing through the fabric, poke your needle inside the quilt and push it past the thread, which will pull the end of the thread down inside the quilt.