To begin, Cut off the top leg band.
Cut off the toe stitching, they will be approximately 12" long.
Tuck the two ends together.
One inside the other. Overlap 1/2" to 1"
Sew a running stitch through the layers of Nylon. Sew with a needle and upholstery thread with a knot about two inches from the end of the thread.
Pull the needle to tighten the stitch
Wrap around the nylon and tie a knot with the tail from the other end of the thread.
Optional: Repeat all steps 1/4" away from the other thread.
Now that it is sewn up, you can add a 3/8 or 5/8 ribbon loop over the stitches. When gluing the ribbon loop, make sure you don't get glue under the ribbon on the top. Your flower or hair clips should be able to slide under the ribbon to make an interchangeable headband. :)