Here is my (worth less than .02) advice. Take both hands and focus on a corner in the room where the wall meets the ceiling. Make a frame with your hands, both thumbs touching, palms up and out (classic silly directors frame). With both eyes open, center the corner. Now open and close each eye. You will find that with one eye, the dominant, your center will stay the same. With the other, the weak eye, it will shift. Now, pick up a pistol. Aim it at that corner where the wall meets the ceiling with both eyes open. Close your weak eye. Guess where you are pointing? Your eyes automatically tend to compensate. If you closed your dominant eye, you would seem to be aiming several inches left or right, but you aren't. If you fire, you'll find that you hit where the dominant eye pointed. The dominant eye leads where we place our hands and gun. Try that exercise 5 times and you'll see it works. Just my .02.
FQ13