Not sure if this has been mention in previous replys.
At address...K position....Spine tilt....this includes the base of the neck.
It's not written in stone that the head(chin) can't rotate to the right.
Nicklaus would pre-set his chin to the right. Hogan would wear a hole
in his shirts at the left shoulder. Jones would see the ball from his left eye.
When doing mirror drills you're looking back and finding your position.
Do some face-on views.