Questions to ask to find how YOU are unique

This question is much more easily answered when I ask myself, "what makes you different than all the other frontend web developers in the world?" I can answer it easily, and I can answer it because I've rapidly excelled as a freelance frontend dev for 3 years; however, yesterday, I started working on the branding for my Twitch streaming channel and I had a pause, a 24 hour pause...

How do I define my uniqueness as something I'm not experienced with? How do I brand myself for something I'm relatively new at (I've streamed for about 650 hours) and don't have much of a following as I half-assed streaming in the past.

TL;DR;
What kind of questions would you ask yourself to discover how you're unique at something you're relatively new at (assume you have a good foundation of knowledge of the platform you'll be working from)?