I draw too sporadically to replicate older techniques, its a blue moon before I remember how I did faces and proportions.
Anyhow, one thing I like to do is use thick lines and shave away from them with an eraser to build shadows and contours. Here's some out of sync examplees.
Some of 2022 so far.
Last two are a little out of order, didn’t check how old they are.
Probably will post some other things of mine from other dates out of order that I didn’t dig from my group’s art channel.