Here's a quick 'military style' checklist for shooting; it can applied to cameras as well (I think):
H -- Holding (rifle should be held in the most comfortable position and firmly, but not in a death grip)
A -- Aiming (Take a moment to properly aim your shot)
B -- Breathing control (as you breathe, the sight will naturally move up and down the target with your body, the trick is to take a few good breaths (2) to steady your heartbeat and on a third one, breathe out half way and hold the breath)
I -- Instinctive positioning (your body should be in a natural position, a good way to check this is to close your eyes for a moment, relax, and then see if you are still aming at the same point after you open your eyes again)
T -- Trigger Control (this is very important, shot should come as a surprise to you, apply steady pressure on the trigger until the action fires, after the shot has been fired, hold the trigger down and "follow through" on the target, holding steady aim, this avoids the body's natural tendency, to "jerk" in anticipation of the recoil)
You probably don't have to worry about recoil, though