If you're talking about handgun shooting, the most important is trigger pull.
If you do everything else right but have improper trigger pull, you won't hit
Next is sight alignment.
After that breathing.
After that follow through, firm grip, ...
45 ACP: Springfield Armory Loaded 1911 5" barrel
357 magnum: Smith & Wesson 686 6" barrel
9x19: CZ 75B, Glock 17
22lr: Ruger Mk III/45