Natalie's cervical spine and left scapula stays very level despite lowering the top of her head.
Use the red flag in the driving range as a stationary reference point.
She does move her head up and down during the swing but the overall integrity of her upper spine and left shoulder remains level.
In a book where everything is important, it is amazing how 3-F-7-C makes an immediate improvement to any golf swing. A couple of rounds ago I found my contact on fairway woods and iron shots thin, with little compression. I moved those laser beams down at the ball, feeling a lot more head tilt. Next six holes, not one mishit shot. I recently tried more right hip clearing to trigger the backswing. My head bobbed, moving to the right and back to the heels as I turned my right hip. If I clear the right hip while my head stays in its address position, it is extremely difficult to hit a bad shot. Kevin Carter got me to pre-clear that right hip, never really clicked until I realized the head was moving with the right hip. Try it, turn the right hip while your head is against a door jamb, right between feet. Don't move it at all while the right hip clears. First you will notice the hip doesn't turn as much, due to flexibility issues and also you will note that the power package moves back, in and up. No out and over-rotation of the LFW like Mr. Scott exhibits above. My irons are going 15 yards farther, I am drooling like Brett Favre when I come to a par three.