I think I would be trying to find a different job because it sounds like your boss is making it too difficult to do your job. I could not have someone watching over me just waiting for me to mess up, that in it's self would make me mess up! There are better bosses out there that will appreciate what you do. Maybe it is time to start looking. I know it sucks cause you like your job but having that kind of boss really makes it hard. I wish you the best.