Based on your post #5, I reiterate what I said in post #2. You've got to positively get that garment out of the way and keep it there until you draw and your weapon is well clear of the holster and on the way up. Then you can release the garment and bring your weak hand to join the weapon and your strong hand.
If you want to shoot...shoot...don't talk! Tuco
USAF Munitions 1969-1992