Many of us, myself included, love to break down and analyze golf swings. The problem with frame-by-frame pictures and slow motion video is that these forms of analysis remove the most important element of any golf swing: timing.
Slow motion video could look flawless to the viewing eye but may not function well at full speed! And you can have a swing that hits all the "positions" on your frame advance button, but that doesn't mean your game is ready for prime-time.
It takes less than 1.5 seconds for most golfers to start their motion and strike the ball. Hopefully the clubhead is moving at 80 mph (or considerably faster) when it strikes the ball. Getting your body synced up with your arms and the club for an efficient and repeatable strike requires great timing.
For these reasons, and many others, I prefer teaching timing and motion over positions. Here's a simple drill to help you with your timing:
With your 9-iron, hit the ball on the green from 60 yards away, then 90 yards, then 120 yards. Then with your Driver, make a full motion and flight the ball 150 yards in the air, 175 yards in the air, 200 yards in the air, etc.
Hitting the same club 3 distinctly different distances will help you develop your timing and improve your control! Give it a try and let me know what you think!