1. Measure your baby's head. Measure it from the back of the neck to on top of the head (just like the headband will lay). Now subtract 1/2" from that measurement. My baby's measurement was 14&1/2 inches so my new measurement is 14 inches exactly.
2. Lay your elastic on a flat surface shiny side up. Measure your elastic (it doesn't have to be perfectly straight when you measure) and mark it with a pen at your new measurement.
3. Now measure from that mark 4&1/2 more inches (no matter what your baby's head measurement was) and cut the elastic.
4. pick up the 4&1/2 inch piece and loop it around until the raw edge touches your mark. Glue down.
5. Now take the long end and loop it around (shiny side out) and glue it at the same point underneath the small loop. Now your elastic structure should look like this.
6. Put a small dot of hot glue on the headband under the loop and press down to attach, making sure your loops are centered.
7. Cut a piece of elastic 2 inches long. Wrap it around the bow from the top and glue to the underside of the headband. Don't worry, the raw edges don't matter at all.
8. You're Done!
Bianca's head is still small so I can get two headbands per yard.
Making the cost of each headband around $0.25! You can't beat that!