Step 1. T-shirt turns inside out, add up the pen in half and mark up a semi-circular shape.
Step 2. Cut carefully, to get even.
Step 3. Stitches from the bottom and duplicated on each side.
Step 4. To enhance the seam stitches additional zigzag.
Step 5. Taking a ruler and a pen mark up equal intervals in staggered rows. Between the rows leaving plenty of room to make the bag sturdy.
Step 6. Cut with scissors along the lines outlined.
Step 7. Now, stretch and test sections.
Step 8. It remains only to cut the handles and the bag is ready!