Set impact position: weight left, shaft lean, open shoulders
The instructor describes the correct impact position for most clubs (not the driver): about 80-90% of the weight/power on the left foot. The shaft leans roughly 10-20 degrees forward and the shoulders sit about 10-20 degrees open, both compared to the set-up angle.
Channel: Golf with Aimee
Watch official source at 2:07Why this context matters
Demonstrated with an iron setup; the instructor notes the driver is the exception.