Get More: Movie Trailers, Movies Blog   screenwriter Melissa Rosenberg dished that writing for the newborn vamp was as enjoyable as you'd expect and she can't wait to see how it translates to the big screen. "That was a lot of fun," Melissa said. "Writing for vampire Bella—she leaves behind her fidgeting and her stuttering and her quirky awkwardness. So you write to that. She's so much more p…