Make sure you know what you want to get out of the internship, whether that be honing your writing skills, learning the ins and outs of styling, or editing. This will allow you to focus on the right tasks, and gain the right knowledge you'll need when you finally step into the real world.
If you're not sure, try everything that comes your way. Don't be quick to say no just because it's something new. If anything else, it'll help you decide what you do and don't like. Internships may be exhausting and daunting, but they really are golden opportunities to gain first hand knowledge and experience that can get you on the right career track. Don't believe us? Ask almost any editor, stylist, or designer about their internship days, and they'll be sure to have some substantial stories of how they got set on the path that led to their current success.