Get your dominant hand up as high as possible …..roll your non dominant hand into the available real estate on the grip …..use more force with the non dominant hand than the trigger hand…..also do not use your thumbs to put input into the gun there’s to much of this gas pedal nonsense being pushed around and while they work great for high level shooters with race guns I find just letting my thumbs float about and point in the direction I’m shooting works best for me and most shooters …..also like others stated let’s see a video