I’ve spent literally 2 years trying to figure that out myself tbh-
this is the general sorta base shapes I use??? Like I swear he changes everytime I draw him anyhow, but it’s just a lot of practice.
It doesn’t help that Klei themselves have changed how he’s drawn over the years and even from skin portrait to skin portrait. For some reason they give his in-game character a much more square chin as opposed to NPC and Lore Max having a long, pointy chin, which I think looks better.