I could write a whole essay about getting noticed. Being noticed is my life in a specific mmo fighting game that I play. (See sig below, and I still hold this title for years. I know every single mechancial detail about this Zero character, and I hold a 81% win ratio of over 6200 matches over several years all on a competitive level and match rulesets)
But two very important pieces of advice:
1) Be super loud and sell/advertise yourself out a lot. Many people will find it annoying, but that's a form of stickyness. Some people even either get over it or develop an appreciation over time instead of being annoyed. So you just have to be super strong willed, egotistical and persistent. (There is nothing wrong with big egos, it's human nature)
2) If you're trying to get known in a competitive scene, you have to be extremely demanding of challenges, and win them. Say you're good at something, then someone tries to say you suck, and then be like "Fight me then". However you obviously must win, as losing will obviously be a big hurtful impact.