I have made a high heel shoe last year for a "stepping out of my comfort zone" exchange locally here in Oz.
It was on mandrel (you can see the hole near the heel) and a bit tizzy with floral embellishment. It was a bit fiddly to do, but at least it did look like a shoe - something a drag queen would wear as it turns out!
Its a bit daggy, but might give you some ideas!
Nat