Character development: How are you going to develop them?
Just like you must have an idea for the structure of you story, the same goes for your characters, their settings and even the scenarios they find themselves in. The key thing to remember is watch out for troupes what will limit the growth of your characters; stereotypes that will stunt other characters and not give them depth; if you are writing cross-culturally (a white writer writing Black character for example), make sure that you have invested time and effort into seeking out someone from that culture/ethnicity/background to read your work!
Why? Blind spots.
You don’t want a work to be offensive to other people when it does not have to be! Having someone read for cultural sensitivity will allow for feedback in a safe space where you can ask questions, get feedback and revise as needed! Your characters are brought to life your imagination—and that imagination may represent a real person. Write wisely.
Note: For sensitivity read-throughs, contact Anette King through her site, The Blurb Diva.