on Writers Digest:
Sometimes, we chase our characters across the page as fast as our fingers can move across the keyboard, and it’s in the editing stages where we refine and invigorate them. Prewriting and planning can flesh out so much, but often, you don’t know them as comprehensively as possible until their story is fully captured on the page.
(And that’s “flesh out,” not “flush out,” but you knew that already, right?)
How can you differentiate your characters after the first draft? Here are three areas of focus for character refinement.