It is much more easier to do it for a girl with nice and visible clit. But when the clit is small or hiden the more practice is necessary. Maybe you will show us that kind of exception next time and what type of moves will be lets, say more promoted over the rest.
I wonder at which moment in time the majority knows that the small part "looking out" is the same stuff the guy has on top of his stick (aka glans). And that the clitoris is a rather big thing like a dick and just "parted" left and right at the entrance of the vagina. Thus regular fucking is rubbing a swollen dick through a swollen dick...