Step #1 After you determine how long you want your handle
to be cut out a strip of fabric that is this long, plus
about 2 inches for hem. If you need to you can cut out
shorter strips and then sew them together.
Your strips will need to be 4 inches wide x “your determined
length”.
Step #2 Now take your strip of fabric and iron it half the
longest direction. On the short ends of the strip fold them
up so the finished belt will not have any raw edges.
Step #3 After you iron it open it up and fold each side of
the strip to meet the center of the crease left by the iron.
Now refold this in the center and iron the strip again.
Step #4 Sew the strip closed. You now have a long belt to
thread through the belt loops of your book bag. You can sew
the ends closed by overlapping them about 2 inches and
sewing them together.