Just remember that it happens to everyone eventually.

1: Always keep your guns safety on, unless you're actually pulling the trigger, never before.
2: Keep the muzzle pointed in a safe direction, especially while you're falling even if it means that you get scraped up worse.
3: Remember that shotguns have a floating firing pin. Hunters have blown their heads off by breaking their fall with the butt of a shotgun.
4: Broadheads are razor blades, be careful.