I was able to make some equestrian-style boots for my Ken doll using this pattern; I printed the pattern at 110% as I wanted my boy doll to be able to wear socks in the boots and I was working with the thicker artificial leather. I ended up running the threads under the insole to give the glue a base for the cardboard insole to stick to, but ended up sewing the edges of the boot to the thin foam outer sole then gluing a second layer of foam underneath to create the actual sole. I also put the velcro opening on the inside, knowing it would take more work to get the boots on and off with socks.
I also made a sample boot using fleece, and the pattern worked just fine using the directions as written.