Every foot is unique to its owners foot pair. Some feet are high arched, some are low arched some have normal arches, some feet are striaght looking others have a a "C" Shape. For which ever feet you are designing for, get a good handle on how to decifer which shape of last one should have and how to draft soles and insoles to create a custom shape for your bespoke work. Learn How many types of sole shape systems their are and which one to pick for your specific project.
