Here are several drawings I did well reading the Frank Hebert book - DUNE. Rather than working from reference these works are from imagination. I do this in real time - read a passage from the book and draw what it's saying (often DESCRIBING a character or environment).
I've been using bio pen for my work. It's quick, bold and allows me to WRITE more. Drawings are photographed at various stages - line and tone. Convert to black and white, just to get rid of that color temp problem. Make everything the same.
Scene at McDonalds with DUNE title (from book) scatted
Illustration was copied from Dune book cover