It is - like moving an arm, or a leg. Very natural. Sometimes - erm - reflex?

[The room is dimly lit, perfect for bringing up another tendril of shadow between their seats. Romain is still a bit scared of them, though, or at least looks that way when Ghyslain uses them, so he doesn't do anything fancy. Just lets it hover there, then dissipate, the black receding from his eyes again.]

It is not always perfect, either. A younger boy at the school tried to hit me, and I only wanted to make it dark enough that I could get away without being seen, but - instead I created a sort of wall. He hit it very hard. That was more punishment.