Are you looking for ideas for your coursework storyboard? Why not work on a variation of how the film of your chosen genre SHOULD HAVE ENDED. Other than doing a wild-west shoot out this seems like a good idea as your imagination will be fueled by the original movie. Choose a well-known film from a solid genre and end it in the way you think it should have ended.
How "Saving Private Ryan" should have ended
How "Lord of the Rings" should have ended
How Star Wars Episode IV Should Have Ended- Animation Parody