In the main though, a flat piece of leather, backed with a stiff board is ideal and common, though three-dimensional forms are possible so long as the painted surface remains secured.The swivel knife is held with one finger providing downward pressure upon a stirrup-like top and drawn along the leather to outline patterns.Usually, these are stylized pictures of acanthus or roses although, increasingly, modern leather artists are redefining and expanding the potential of the materials.In embossing, a handheld tool or custom metal die is used to elevate portions of dampened leather.Molding has become popular among hobbyists whose crafts are related to fantasy, goth/steampunk culture and cosplay as well as those interested in more classic styling of bags and household items.Two well known pieces of molded leather are part of the funerary achievements of Edward, the Black Prince, the heraldic crest and shield.