Find a pair of old jeans and cut up the back pockets.
You can also cut the top part of your jeans for your purse.
Then place pockets together. Make sure the darkest side is facing inside.Only sew the sides.Leave the top and bottom open for later.
Once the sides are closed cut a piece of the jean fabric off a leg and place it on the bottom side of the pockets. After it is sewed on feel free to cut the fabric as you like.
Then sew on the top of the jean cutout on both sides.
After everything is put together you are done. I used a sewing machine after just to reinforce the purse. If you are interested you maye also add colorful beads at the ends.