" Fiction, like sculpture or painting, begins with a rough
sketch. One gets down the characters and their behavior any
way one can, knowing the sentences will have to be revised,knowing the characters' actions may change. It makes no difference
how clumsy the sketch is—sketches are not supposed
to be polished and elegant. All that matters is that, going over
and over the sketch as if one had all eternity for finishing one's
story, one improves now this sentence, now that, noticing
what changes the new sentences urge, and in the process one
gets the characters and their behavior clearer in one's head,
gradually discovering deeper and deeper implications of the
characters' problems and hopes. "

― John Gardner , On Becoming a Novelist