This is usually something I do in winter or late at night. Find a show on Netflix with great lighting and people to practice faces.
This week I discovered a British reality detective show called “The Detectives”. So many great faces. I will have to watch it again. When I see a good face I will freeze the screen for 5 minutes while a do a quick sketch of the face. These are a combination of Pentel brush pens and a Platinum carbon pen. A probably could go darker with the shading on the faces. I may end up doing that late one night!