I am sort of reconsidering the shape aspect of the challenge. Since I like using plastic cable ties for boning, I am thinking I can use hot water to permanently change the shape of the ties. My initial thoughts are making a duct tape dummy, putting the finished corset on it, pouring boiling water on it to soften the stays and let it dry on the dummy to take that shape. I don’t know if this will work, but I think it will be a cool experiment.
I found this example on farthingales’ that shows a comparison of the Dore and Silverado corsets and a silhouette like the Silverado would give me the opportunity to test this idea.