Bring your shoulders in a little more when you're aiming and shooting. Bring your head down a little more to the level of the firearm.
This nonsense of hand and arm strength being "60% 40%" or whatever they say nowadays between your favorable side being the higher number..Is just that. Nonsense.
Also, a lot of it is trigger control.
You gotta crawl before you walk. You gotta walk before you run. You gotta run before you sprint.
Practice slowly at first. Once you get down that range aspect of accuracy, try under stress.
The academy I was in an .40s&w was a PITA combination. lol You'll do fine.
Sáncte Míchael Archángele, defénde nos in proélio, cóntra nequítiam et insídias diáboli ésto præsídium. Ímperet ílli Déus, súpplices deprecámur: tuque, prínceps milítiæ cæléstis, Sátanam aliósque spíritus malígnos, qui ad perditiónem animárum pervagántur in múndo, divína virtúte, in inférnum detrúde. Ámen