First of all, you need at least a few more years of skills.
You're a student, I get it. But I guarantee you suck ass at 3D. If you still choose to ignore me, then you need to hit up local businesses. How and what to tell them, that's up to your shitty skillset and false confidence going in there for a pitch. You need to have a portfolio so the owners know what kind of shit you're going to produce for them and how much you decide to overcharge them. When they all tell you no, look into news stations. Most likely they will laugh at your lack of designs and portfolio so you will have to work at the bottom and work your way into the position you want years later.
You can maybe con your way into a music scene if you want but just know that musicians are broke as fuck and even if you create the best animations in the world; they will not value you, they will take advantage of you at every avenue, and you will still not be developed enough.
Freelancing 3D is possible but if you are here asking for advice on it, you're nowhere near ready. You're at a school. Network and listen to others, follow their path a little and see what they are interested in or moving forward with.