Shading

This was my favorite piece for shading. I used geometric shape for the sphere and cone. then to give it a 3D effect  rather than 2D, I kept the middle lighter than the edges. The edges are darker than the middle so it gives a varied black, grey and white of the spectrum. No color was added, but this a crisp clean sphere and cone that I impressed myself with because it was my first attempt with charcoal.