Spend 1/4 to 1/3 of your time on weak hand shooting, including positions as well as just on a still target. Part of that time should be one hand shooting as well.

and

Determine what it takes to draw with your weak hand from your strong side.

When the Jeep tried to kill me years ago, I was left in severe pain while my passenger hoofed it out to get help. Sitting there nursing my right wrist, contemplating whether I'd ever get use of it back, having chugged the last of the children's diclofenaco, the thought came to mind, "Can I shoot with my left hand?" Concentrating on shooting out the window of the Jeep from a braced position helped to get my mind off the pain a little bit. Over the years I put some time into here and there but with a bad left retina my skills suffer tremendously at over arm's length. Once we get a new range I'll have to give 'er another try - it's been a while.

Found out that an old dog CAN learn new tricks!

Oh yes, the comment re: practice? The strong hand needs it as well.

One hand is all I got at the moment Miles, so that one will get a workout for at least the next few weeks.

I think to optimize my practice & burn in basics, I'm going to concentrate on slow fire (AKA drills) at 25 yards, with some LH yank & blast from 5 yards and closer. There will be plenty of dry-practice too, until the sights fall under my eye as soon as I extend the gun.

This is important for me because my left hand has its own problems related to a long ago disagreement with an Old Hickory, that severed the extensor tendons of the thumb and next three fingers. It also did some nerve damage to my left index and 'bad' finger. But it is strong and usable and I'm especially thankful for that now.

You did beter than I can with the left hand. I do practice with it some but not as much as I should...