Is this grip what you would call "teacupping"? Should the support hand come forward and up more?
pretty much a modified Tea Cup.
Personally I point the thumb of my left hand straight out from my body and lay the frame of the pistol up against it with the heal of my left hand at the back side of the grip. Then I grip as high on the pistol as i can up into the beaver tail and lay my right thumb on top of the safety.
In this manner when I point the tip of my left thumb up, down or side to side I know the slide is going to be straight and bore axis in line to what I am pointing at.
I don't really use my sights unless I am shooting out at 45 feet and beyond, anything closer and I am point shooting into the A zone.
70% of my grip is with my left hand and the rest is on my right hand, I lock my wrists and leave my elbows loose, lean into the gun and let fly.
I do get my sights up and into the shooters box so I can see the front sight when double tapping or dumping a mag and watch for the front sight to hit the same point each time after pressing the trigger.