by John Briggs
I’ve known plenty of authors who spend hours creating character sheets for their main characters, worry about what their shoe size is, favorite color, and the name of their childhood pet. They rewrite them to seem more alive, but forget that their minor characters, even those who appear for several pages, have personalities, too.
Remember, your story may have minor characters, but no one believes they are a minor character in their own life. Everyone has a personality.