I (Tarun Aggarwal) recently got a chance to attend a portrait sketching workshop. It was conducted by a colleague at my workplace and was part of an effort to keep people engaged during the lockdown-era. I was pleasantly surprised and was able to make something which passed as a good enough sketch at the end of it.
Part 1, eyes
In the first session we were taught how an eye looks and how to sketch it.
Part 2, nose and lips
In the second session we were taught to sketch nose and lips.
Part 3, face outline and hair
In the third session we were told what usual proportions of a face are, and then how to add hair (shape and volume). You can see the rough lines to indicate the location of brow, nose, lips, chin etc.
Part 4, completing the portrait
Finally we added remaining features to the face.
If you liked the above, please feel free to leave a comment.