....when you can write in the "Endorsements" section of the MR without your hand shaking nervously.
......when you can approach a LAME about the fact that the whole vertical stabiliser has just fallen off on taxi and he doesn't roll his eyes, turn to the other LAME's and say, "....ah, bloody pilot finger trouble!", and the rest of the LAME's don't roll their eyes, giggle and shake their heads..................................................or something like that........