This was referenced from a Bruce Lee Enter the Dragon photo. What i done was i very lighty sketched it with pencil, i turn up my lamp lighting because light penciling is hard to see, as you know. then i do the ink work, start outlining, tracing over my pencil work then fill in. for the textures i used a protractor. did some stippling (dots) with a technical pen (india pen) and used various nibs for thicknesses.