http://ashleyfmiller.wordpress.com/2011/04/10/interview-with-nicholl-fellowship-winner-micah-ranum/

There are so many ingredients necessary to make a good script great that if just a few are missing, the story just won’t feel quite right. Basically, tell an entertaining story and make sure it is full of conflict with dimensional characters that a reader and an audience can fall in love with. But first and foremost, fall in love with your own story so that you can spend lots of time necessary to rewrite your work.