Portrait Art - Free Charcoal Lesson Sketching the human face with charcoal (using brush techniques) Originally written Jan 2004 Copyright: Like the previous Drawing People - female figure in charcoal, this free art lesson on sketching faces again uses charcoal and a brush, though this time the water is added to charcoal particles, a red earth-like pastel is used, and the paper is prepared before use. The walrus moustache and hair of this 19th century philosopher, make it an ideal subject for the medium using a more coarse, hog's hair brush to render the textures in a rapid.