How can I get a little bit famous?

Ok so I have a microphone set up my room (along with an electric guitar, an acoustic guitar, a keyboard, and a drum machine) and I sing pretty well. I usually set up my iPhone with speakers and sing over Aerosmith, Bee Gees, and Elton John songs that play from it.. I like doing it, and—again—am pretty good. So what would be a good starting point if I consider publicizing my singing?