A template set includes a first template for drawing the contour of a three-dimensional shape and a second template for drawing the visible and invisible edges of the three-dimensional shape. The first template has a plurality of apertures, wherein each aperture has a periphery circumscribing an area, the periphery representing the contour of a pictorial representation of a three-dimensional shape. The second template has a plurality of sets of linear apertures, wherein each set of linear apertures corresponds to a respective aperture in the first template. The linear apertures include continuous linear apertures which are used to draw solid lines representing visible edges within the contour, and intermittent linear apertures which are used to draw dashed lines representing hidden edges within the contour.