The lower leg part of your old jeans
Cotton fabric (you can use any left over scraps you have).
Pull the fabric away from each other at the corner of the bag, on its wrong side and mark a line 3/4" across the corner as shown above. Sew along the line, making sure to reinforce at the start and finish. Repeat the steps on the other corner. This would give the bag its three-dimensional shape.
Repeat the steps on the corners of the lining just as you did for the main body.
Align the raw edge of the lining with the raw edge of the bag and pin all around. Sew the lining onto the bag, leaving a 3-inch gap without sewing to pull out the lining.
Now we need to do the strap.
Take two fabric pieces 1 & 1/2- inch wide and 44-inches long. Preferably you can make it longer or shorter.
We are almost done with the bag, lets do the ornamental bow.
Lets do the ring around the bow.
Now we need to attach the snap button inside the bag.
Your bag is ready!