Jeff posted this reference pose online. I used it as the basis of several works, of which this is by far the simplest and most stylised. It is knocked back to include just the most fundamental details, and drawn using a selection of gel-based rollerball pens.

 

Materials: Rollerball gel pen ink on paper
Equipment used: Pen plotter; Raspberry Pi single board computer; Inkscape to control plotter
Size: A3