How to change your username in MuseScore?

So you're excited about getting your MuseScore account, but after setting it up and picking a username, you are unsatisfied with your pick. My current name is REIGNSCYTHE, which is cool, but I've come up with a better one. The question is, How do you change your username? Also, post if you have this same problem, and if you know of a solution. Thanks!