Hi Phyllis, here's one set of instructions....
To make a denim purse, start by cutting the legs off an old pair of jeans. Then, cut open the crotch at the seam and cut the extra fabric off so you have a straight edge. Next, turn the jeans inside out and fold them in half so the zipper is on one side, not in the center.
25 ideas here: https://betweennapsontheporch.net/25-denim-bags-purses-made-from-recycled-jeans/