Good advice by bowbenderman. If you're concerned about form, look hard at Terry's form clock on alignment, that's your foundation. To get back tension, or test your own, use a formaster. You can do a search here and get a ton of info on it. I made one real cheap and you'll know immediately after the first shot if you're back tension is in the ballpark. Lastly, because of your injury, don't sweat it if you don't have the exact form as others, because we're all different and with time and practice you'll find your own form. I've seen guys with perfect form shoot o.k., and I've seen guys with "what the heck is that!" form shoot lights out. Discover what's comfortable and repeatable and you'll be on your way. Oh, and did I mention a formaster?! Good luck.