Duct tape dress forms: Part 1

So, I am attempting to make duct tape dress forms. Regular dress forms can cost $2,000 ... and well I don't really have that kind of money right now, so this is my alternative. I loved this idea because it is really perfect for getting the right fit. Me and my friend only had an hour to try this (she had to be somewhere else) so we only got half of her body done. Not sure how that will affect the final product but hopefully it will still work.