If any one of these questions had you fumbling for an answer, then you’re missing a prime opportunity to deepen your characters and expand your story. How well do you know your characters? Like the back of my hand, you say? Do you know the color of your hero’s eyes? Do you know where the bad guy went to college? Do you know your heroine’s most embarrassing moment? Can you rattle off a list of your main character’s idiosyncrasies? Typical expressions? Romantic history?