The document discusses various methods for characterizing characters in writing, including direct and indirect characterization. Direct characterization tells the reader about the character, while indirect characterization shows the character through appearance, voice, actions, and thoughts. It provides tips for developing round, dynamic characters such as considering where they live, where they're from, their age, name, appearance, childhood, occupation, how they deal with conflict, their relationships, and their goals and motivations. Writers are encouraged to deeply consider these elements to bring characters to life.