Most of my stories start out as a scene in a place I don’t know with characters I don’t know. It takes me a lot of work to dig into my characters and figure out who they are, why they’re there, where they’re going, and so on and so forth.
Which means that during the character development phase of writing, I revert to a five-year-old.
I sit down with a notebook, write the character’s name at the top of the page, and ask why over and over again, long past the point of sanity. Why is she wearing long sleeves in the summer? To hide the scars on her arms. Why does she have scars on her arms? Because she tried to break up a knife fight. Why was she breaking up a knife fight? Because she was trying to keep one of the guys from getting killed. Why did she care what happened to him? Because he’s the only person who knows where her brother is who ran away three years ago.
And that’s generally the point where my questions explode. Wait, what? She has a lost brother? Why did he run away? How did she feel about it? Did they get along? Has she been looking for him? Has she heard anything from him since then?
So I take each of those branches and why them to death too. Usually, as my characters develop, so does my plot. Motivations become clear, side plots sneak in, and important details begin to organize themselves for slow reveal.
How do you flesh out your characters? Do they come full of detail, or does it take effort to learn about them?