Thanks for all the feedback.
pj1974: It was just one take. Having done a few of these I have developed a better method for referencing.
Say if I draw legs, I will start at the waist, keep a finger at that point then draw the leg. Back to my
finger to draw the other leg and so on
It was all myslef, and LED key chain lights.
Thanks for sharing part of your technique. You certainly did a great job as a one man show in doing the drawing, and also capturing in a photo!
Very cool idea, to use the LED key chain lights (with different colours).