for me, it is so good for a 1 min gesture. Try other time duration and show us.
Break the face into simple shapes before adding the eyes, lips and noses. Try the Loomis method.
Curves are the way to go, be confident with your lines and the drawing will look confident as well. Practice making curves and lines with 1 stroke using a pencil.
Learn more about form and shapes, it's a good thing to have increased knowledge with this fundamental specially if you are drawing faces in perspective.
Pretty good, I like the flow of your drawings.
Hi, if you are using windows, you can snap the Photoshop window to the right side of the screen and the line of action tab to the right.