When you sketch a shoe but don't have the intention to do a proper shoe, it remains a curvy sketch with no detail. The shoe completely morphs to the body.
In France you cannot not have lunch. If you stopped the French from having lunch, you will have a second revolution, I can tell you this. Not going to work - it is part of the French privilege.
A good pump is a silhouette, like the bone structure of the face. It's like a beautiful face with no make-up. You can cover a not-so-beautiful face with make-up, but it is just a mask - it is the same with shoes.
The heel is engineering in itself. This little thing that supports the human weight has to have a precise balance.