I believe OP heard that you are supposed to spotmeter a person's cheek and then give +1 but OP failed to follow that advice (which "underexposed" one stop). It didn't matter.
Originally Posted by Poisson Du Jour
Yes, latitude of black and white film makes that possible. But the take-away from the experience shouldn't be "ok to forget the +1"
You are supposed to open up 1 stop. You can't always get away with underexposing 1 stop... So you shouldn't set yourself up to make under exposure errors a habit.