More Pen and Marker work
David boyle pilots
David boyle arm
David boyle spawnpx

Pilot Hi-Tec C pens of various sizes, with Copic marker on Letraset marker pad.
For the splattering effect, apply the vignette first without any other coloring, then splatter with colorless blender. Let dry, then finish coloring as usual. Gives a nice grimey look! :)