Watch shoulder alignment on more forward ball positions, your right hand is on top of the grip and that's why I say that , feel like your pushing the club back with your left hand and the clubhead should follow, your not turning your body as much as you should on the backswing. I'm not a pro so take it with a large grain but that's at least what I think I see.
Handicap is a system that allows players of all abilities to compete under certain rules and the lower your number the better the player is.To obtain a 1 handicap usually takes years of practice and a reasonable amount of athleticism, players are usually proud of themselves if they reach this type of proficiency at golf.
I remember seeing Payne Stewart at a practice round during the 87' us open not wearing knickers and I didn't recognize him until he was much closer, some of the color schemes were a little wild but some looked good, I think the chicago bears look was a good one as was the patriots and this from a raiders fan.
Probably when you either stop raising up or squating during your backswing is when thin and fat shots become less frequent. This by far is the most common reason but may or may not be yours, go somewhere that you can get a reflection of yourself swinging a club and watch how much up and down movement you have during your swing and work on eliminating as much as possible, however try to resist making yourself too ridgid to avoid this just try and keep yourself a steady...