This is Easy!
I'm right handed, and left-eye dominant. I shoot long guns left handed and handguns right handed.
It works, but this summer, champion shooter Doug Koenig gave me a tip that just makes the problem go away.
For a right-handed, left-eyed shooter like me, DON'T tilt the head, or hold the gun crooked in the hand.
Get a standard grip so that the line of the barrel extends backward straight down the arm.
Just before drawing or brining the gun up to eye level (keeping the head upright and the eyes level), move the head slightly to the right. That is, point your nose about 5 degrees right of the line to the target. Then raise the handgun. The sight will line up with the eye. It's simple, easy, and I've been doing it the hard way for 40 years.
No wonder Koenig is probably the best handgun shooter (maybe all-round shooter) in the country, and maybe on the planet.