Find and post the most impressive pencil value drawing you can find from research.
The list where you see all of the light terms- highlight, light value, medium values, shadows, and cast shadows. You may be intersted in looking at illusions by M. C. Escher. I suggest searching pencil value drawings.
Ex. highlights- pupil of eye, center of lip, light value- forehead, medium- most of hair, dark value- hair, eye lid, center of lip, cast shadow- under lip