I've been practicing in the past several months. Here are some pencil sketches of portrait exercises my younger sister provided me. She's in a special program for the arts in high school, an opportunity I was never given when I was younger. Ever the opportunist, I thought this might be a good time to start with the basics.
Note: I copied the portraits from my sister's portfolio. We both aren't the original artists. Unfortunately we do not have the name of the author of the workbook.