I worked really hard tonight to try and commit this skull position to memory. I took me two hours just to work on these few sketches. I’m sure I will get faster with time. The main issue is learning how to abstract the major shapes of the skull to help with memorization and eventually to be able to reproduce the skulls from memory. What seems to prevail is not a special way to construct all skulls in any position but to just draw many skulls from multiple positions and memorize then use the abstraction to fill in the gabs… maybe.