loomis method
Drawing and Shading a Realistic Nose in 3/4 View in Pencil or Graphite Easy Step by Step Tutorial
Here is a step by step tutorial for drawing realistic noses in 3/4 view with pencils / graphite pencils. "3/4 view" or "angle" means that the face is turned slightly to the side, but not all the way. Shading is a vital part of making a nose look realistic, and this tutorial will show you step by step how to shade the nose properly