Even though you are "only" a college student, you can still present yourself as a young professional. This includes your physical appearance, your email address (get rid of firstname.lastname@example.org), information and pictures on your social networking sites. First impressions are the most important step in building a relationship, whether it's business-related or when going on a date. Do your part in making a lasting, impressive first impression.
It’s true: Appearance is everything in today’s society. As superficial as it may seem, it is very important that you present yourself properly. Even if you don’t realize it, YOU are a brand, a business. You need to sell your personality, skills, and so on. When your personal brand is a business, EVERYTHING matters. I think Jay-Z said it best: "I'm not a businessman, I'm a business, man..."
Moral of this story: You're the CEO of your personal brand, so use it.