Nobody ever said making a short film was a walk in the park, but if you've got a permit to shoot in that park, it's a lot easier. This is just one of many useful tips Andrew Slattery, a young filmmaker from Australia, offers. Write it your way. You can achieve this with a combination of visual technique and slick dialogue. Establish what's going on and progress through the action.
Interesting characters are a story.
Experiment with dialogue. Get your idea down, but consider it temporary. Make copies and hand them out to friends and crew for criticism. Rewrite at least five times. Each time you rewrite, you will develop a stronger vision of the film.