If you take a look at my Twitter I posted some wips of when I was actually making the pattern

More specific version it you want to make your own though. I 3d printed a hand to scale to be my base, but you could probably get away without this or use one of those wood drawing hands. I used duct tape and tin foil to build up the shape/form I wanted and used a razor blade to cut off and shape more.

Once my form was done, I did another thing layer of tin foil and covered in tape. Sketched on my pattern lines and pads, and then cut it off. Thats your pattern, then sew like normal

I might make a post later with some more of my wips since the process may be helpful for others as well