I have mastered the lighting, I have mastered the backdrops, but I also have learned this terrible truth about myself:
I am constitutionally incapable of holding the damn camera straight.
I have to rotate every photo at least four degrees counterclockwise when I crop it. Except the ones that I have to rotate clockwise.
Another truth about myself: I do not know the difference between clockwise and counterclockwise until after I have clicked the button.