Hitting the tone

Well today I have been experimenting with tone. For this I drew Lexxii using a light box and a col-erase pencil. I didn't draw any lines, and tried just to draw with cross hatching and shading. It was difficult and I have learned to appreciate how useful line is in setting up an image even if the line is removed, or mostly removed during the rendering phase as I normally do. I enjoyed this and am happy with the outcome for a quick sketch.