I stand facing 45 degrees to the left of my target. I am right handed.
I'm quite good with an HW45, but for me there is only one way to hold it - use the standard 1911 grip technique.

Hold the grip at the bottom, don't choke up onto the tail on the bottom of the action. Wrap your fingers around the front of the grip at the 2nd knuckle and hold the gun with these fingers, not your thumb. You should be able to lift your thumb away and turn the gun upside down, still holding it with just your fingers around the front edge of the grip. Lightly rest your thumb across the back of the grip, don't grip with your thumb.

Bring your cupped left hand up and gently rest the knuckles of your right hand in the palm of your left. Keep you left hand open, don't grip your right hand with your left.

Don't touch the trigger guard, it's tempting to poke a finger from that left hand forward to bear the weight of the gun under the fore end, don't do it.

Ironically enough, I've found that the contoured grips that HW fitted to the Black and Silver Stars pretty much prevents me from using the only grip style that works - so I like the older slab grip guns.