>>373862672
>3. Stop closing one eye
>4. "Look through" the sight
This only works if your dominant eye is on the same side as your dominant hand. My dominant eye is my left but I'm right handed.
If you want to figure out what your dominant eye is, pick some object in your room, make a circle around it with your thumb and index finger and then close one eye and then the other. The one that isn't misaligned is your dominant eye.