I think I would sew more clothes if I had a dress form suited to my exact size. The worst part of sewing for me is taking seams out and re-doing them a zillion time to get the clothes to look right on my body. Of course, personalized dress forms are expensive. It never occurred to me to make my own, but that’s exactly what Amy at Craftlog did with duct tape.
Apparently, she got a close-fitting turtle neck and essentially covered herself in duct tape, making a mold of her body. Then she cut the mold off, stuffed it with a “combination of an old pillow and fiberfill.” Then they mounted the form on a pipe and plywood base. Here’s some more detailed instructions from Threads Magazine.