Dry Fire practicing can work wonders. .22s don't like dry firing too much, but you can get snap caps even for them. With slow dry fire practice you can actually see your hands pull the muzzle off target (especially with pistols) and then can work to eliminate what you see. Also flinching will become painfully obvious when dry firing.
Other things to concentrate on while dry firing is your breathing, your concentration and on absolutely freezing your entire body for a count of 3 after pulling the trigger. Good shooting is 90% mental - you need to teach yourself to control what is happening with your body as you shoot and block out everything but the sights and the target.