This is my eleventh illustration for Drawrch.
For this one, I wanted to try to stick to a single hue for the woman, which I mostly did. The only exceptions are the whites of her eyes and the glasses lenses. It helped that the reference photo, which I found on SketchDaily, featured a woman who was very monotone anyway.
I used Procreate's Syrup brush for almost all of it, with some light Airbrush on the lenses and the background.
Time-lapse below!