The footwear industry always has room for entrepreneurs who will design shoes that are both cute and nonrestrictive to the natural shape of the foot, a rare combination. The first tool needed to experiment with custom shoe design is a shoe last. Traditionally, shoe lasts are carved from wood, but the steps outlined here allow you to quickly mold an amateur last with household supplies. The shape of the last determines the shape of the shoe, so molding one to your own foot lays the foundation…