BTW,
I did leave something out. I was asked whether I mapped my face. I did. It turns out that all of my face hair points south.
On the chin line, it is both south and outward.
Below the ear area, it mostly south but a little towards the back.
About 50 shaves now and I believe I have the theory down pat. Just a matter of practice to improve and to be able to make shaving a natural part of my movements.
Ciao