Next time, try and keep your eyes open.
Good advice, just to clarify, both of them?
Both eyes open unless you're right handed left eye dominant or reverse is true. If you hold gun in right hand being left eye dominant and hold both eyes open you will miss entire target at short distance.
I'm right-handed right eye dominant, therefore, when I hold gun in left hand I close my right eye and aim the gun with left eye. That is one handed shooting, a more advanced combat tactic in case your other arm is out of action.
