Thanks, all! I am working on a second one from a taupe pair of jeans. What helped and saved time was NOT seam ripping as I followed directions exactly on the red bag. I decided to try cutting first 4 pieces apart instead. Worked fine-you only need squares to be 19 cm. I had to cut off metal rivets, but I was worried about sewing with them anyway. Then I stablized the front pockets by stitching around edges. Our darn power went off and the returned later--about 4 times! I decided to finish later. (today)
There are lots of steps, but they are easy.