I recommend focusing on interacting with more people and making more friends. Generally, it's easier to know or recognize a person based on what you do together, than about what product they made. For example, you can participate in trades, collab projects like choruses or medleys, exchange events like Secret Santa, and so on. It's also a lot of fun to talk about your UTAU characters with other people's characters, or to arrange duets, and so on.