QUOTE: "One handed? How silly. Sounds like some wants to pretend they are James Bond...."
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Sounds like someone has never shot "Bullseye" Matches at the competitive level.
One hand ONLY, allowed there.
Balanced stance, knees slightly flexed, extend the gun arm, close your eyes, find your "natural point of aim", open eyes, off slightly? Adjust your stance accordingly.
Watch your breathing.
Trigger control. As the 'sight picture' drifts off ...hold...as it drifts on, start your squeeze again. The gun should surprise you when it goes off.
It not, you are flinching/anticipating.
PRACTICE......