IronSkeleton's sketches

[IronSkeleton09]

Basically, When I put the middle line, I also take the jaw in account, so like, drawing a line across the entire skull, then putting a line in the middle. Honestly it worked while drawing skulls for a bit without looking at references/looking at them, but they always felt off when I applied it on actual portraits it felt wrong.

But yeah, I think your method will be much easier to learn and use.