Hey, if nothing else, you should be able to write one phenomenal cover letter. That's the great thing about writing—it's a skill that every industry needs. For more information on further study and to find a course that interests you, see Masters degrees and search postgraduate courses.
No one is going to walk up to you and hand you a job. You will probably need to do a postgraduate course, too. While this can be exciting and fast-paced work, wages can be low and competition high. As a grant writer, you'll spend your days convincing people with boatloads of Benjamins to spare a few dollars for deserving non-profits.
They might come in as ringers to help script or consult on a television project, they might be hired to be a talking head, they might be in the rolodex of people in the field as a possible ghostwriter or collaborator. There are plenty of reputable ones available, but those with National Council for the Training of Journalists NCTJ accreditation are almost always preferred.
Creative Writing, like many artistic majors, isn't so much about directly training for a career; rather it's about giving you the protected time and the space to engage exclusively in the work you're passionate about and develop and hone your skills as a writer.
Often times, of course, the people that fill these roles are actual working experts in the field, but you'd be surprised how often those guys kind of suck at explaining in a compelling way what it is they do or why it matters.