https://www.creativebug.com/classseries/single/foundational-figure-drawing-heads
The head and face are often the most daunting part of sketching a figure, but the process can be simplified by following basic rules of proportion. Artist and educator David Tenorio gently demonstrates how the head can be broken down into segments, resulting in properly proportioned facial features and details that make for a realistic portrait. You’ll learn the “ball and jaw” method, how to sketch with charcoal, and how to place features into the face. Finally, you’ll learn how to trust your eyes, recording what you see rather than how you believe faces to be – a skill essential for drawing the human figure.