My drama teacher used to say, “There are no small parts. Only small actors.” While this might have been used at the time to assuage the ego of a rather precocious eight-grader, the truth of it nonetheless rings true. The supporting characters of any play, film, or novel are arguably one of the best ways to make your story well-rounded, timeless, and engaging. Imagine Harry Potter without Neville or Luna. Imagine Pride and Prejudice without Lydia. Imagine Romeo and Juliet without Mercutio…