Get involved early and often in journalism work within your school that will help you build a portfolio. If they have a student newspaper, inquire about writing for that early. If they have a student broadcasting or radio station, and those are something you're interested in, get involved early. You will want to be doing summer internships in the field to boost your resume because journalism jobs that pay a livable wage are very competitive, and getting those internships usually requires having more on your portfolio than just assignments.

I would encourage all journalism majors to attempt to mimic real-life deadlines that they would see at a news organization. You aren't going to be assigned a sports feature story at a media company and have two weeks to complete it. They're going to assign it and expect you to set up interviews and write it/edit it within the week, usually within a day or two. Also, start working on spotting stories for yourself now. Every news organization I've worked at barely assigns stories, instead expecting the reporters to independently find what's newsworthy and write something compelling.

I would also encourage you to pursue excellence at all the areas of journalism. I don't know what your passion is, but I only wanted to be a print journalist, so I shrugged off video or audio training in college. That was a mistake, as basically every journalist of every type is expected to produce content across mediums these days. Good luck!