Two fairy tale stories. One I begin when the hero is seven, and he meets up with a wild man of the woods, with consequences that rebound throughout the story -- but not until he's fourteen or so, except for the coldness it creates between him and his father.
And the other I begin with the heroine getting some grief from her family about something she had done several years earlier -- it's her getting away from them for a breather that starts the story.
Whereupon I ponder whether I should have the scene first, depicting it. Even though it's not so dramatic as the scene with the wild man of the woods. . . .
One begins at the beginning of the story, which is to say, of the conflict. The trick is discovering where that is.