Have you considered plastic surgery, or at least tried to stop smiling so hard while you are shooting.?
I was tasked to train a new shooter the fine art of precision shooting. Our 308s are equipped with heavy laminated Monte Carlo stocks.
This ole hand had a jaw like a banjo, and his eyes were so close together you could poke both of them with one finger.
There isn't enough wood in a telephone pole to carve out a groove for that guy.
He just had to learn how to shoot lop-headed. It took him longer than most that I have trained, but he did become an excellent shot over time. It's all about doing everything exactly the same on every shot.