"PORTRAITS" by Dad's Daughter
1) When drawing a man (like my Dad, above) always start with the stubble. Take time to get it right because it's the most important part of the face.
After that, draw what you see in a band that goes either across the face or up and down. Whatever's not in that band gets the short shrift. In the example above the band is horizontal and includes the ear and the nose. The mouth and eyes are outside the band and therefore are drawn tiny, as an afterthought.
2) Above the mouth the head bends. Paws make great hands.
3) Eyes are over-rated and are seldom worth drawing large. Now the ear and nose, THOSE are the true mirrors of the soul! Adults have HUGE noses! Glasses are also over-rated. Draw them tiny and floating Chagall-like in the air.
4) Adults are grotesque! Shapes bulge out of the face like ginger roots on steroids. On a face like my Dad's it's best to draw each section of the ginger root independently, without thinking of how it fits into the rest.
Pay attention to the muzzle and how the stubble wraps around it.
5) Sometimes it's fun to experiment with pie-plate head shapes. After all, the on-lookers are way too busy looking at the beautiful stubble you've drawn to know if the head-shape is working. Be sure to put lots of tiny blood vessels in the nose and don't skimp on the ear hair!
Note from Dad: I actually wrote this but the ideas are my kid's.