When pitching an idea to network executives, Littlejohn advises that you know every detail surrounding your show; from the world your characters live in to their past and their goals. They have to be three dimensional figures on the page because, ultimately, the characters are what really sell a show. â€œJust know those characters and make those characters interesting and youâ€™ll make them pop,â€ she says. â€œYouâ€™ll write real people with real needs, real desires and real dreams.â€ If a question arises about how a character would act in a particular situation (not related to your script), you should know him or her so well that you can predict his or her next move, she adds. Remember, you created the world they live in.