Anyhow…o picture 4, you state:
“Right under the nose I create a little valley in the clay. Look at your own mouth in the mirror to get a better idea of what I am talking about (I have no idea what the medical term for this part of the body is called)”

I hear that bit commonly referred to as the Cupid’s Bow. I hear it more in ref to the female lip, but it seems it would apply. Dunno.