I've updated the development slideshow for the self-portrait with progress so far.
I still have work to do on the nose - its too bulbous. I may have darkened the beard too much, but that depends on whether I decide the face need darkening for more shadow. Also need to finish the hands.
Finally I will need to sort out the neck, clothing, background head area above the right hand. This sounds like a lot, but I think I am nearly there.
Spent just under 16 hours on it so far, but I have some interesting ideas on further development of this pointillism technique with the acrylic markers!