Hello Leon nice to meet you and you dont have to worry about being rude :) And regarding about your question, im going to be honest that not much anatomy was considered in these studies. I would say midway this became about values, light, shading/blending technique out of frustration because I've realized that i don't know much of the anatomy of the skull so i mostly eyeballed it. And emphasis on technique so Ive been trying to learn to "paint" and paint light/values as Ive only recently started doing art during the pandemic. But thank you for asking that out as Ive realized I should've also focused & emphasized learning more of the shapes and forms of the face than just blindly copying. And yes! I did just copy the visual information from the reference! I do appreciate for asking, if i may ask do you know any helpful resources that's free or cheaper and similar to proko as im still saving up to purchase his whole tutorial package. Thank you in advance! -Patrick