Love how much of the greatest job on your facial expression, AuntHerbert. My littlest bit of advice for you, is to just put this into your your dang portfolio. The reason why you could and should put this face drawing in your portfolio is because, I love how fast and confident but slower and careful you drew this expression on full display. Also, the client love to see that quality in your final products, in addition to your ruff studies.
Hope this helps, and happy drawing, AuntHerbert!