You also need to know a LOT about journalism. Do you know how to write in journalistic style? Do you know how to interview people and how to write a news article? A lot of people don't know how to write in journalistic style, and that's something big, obviously... lol.
Not trying to rain on your parade, but I write for my small-town high school newspaper and the first thing we have to teach the intro students is how to write a GOOD article. Knowing how to write is fine, but if you mostly are a creative writer, it's a hard transition into journalistic writing.
Again, good luck. If you want something hard enough, you get it.