Like Bowie, the trick is to achieve mastery over the element that makes your voice unique, and then to push yourself to learn and acquire new techniques to enhance it.
What’s the one thing (or three or four!) that you do that nobody else does? Describe your band, give a brief history about your work, and highlight your accomplishments. If you don’t have any successes yet, then your goal should be to get your foot in the door of a small local venue, or play in your friends’ living rooms and backyards and set up cameras to capture the show, or do whatever you can to get out there on the circuit. Then build momentum from there.