I believe the trick is something that shows why you are unique and interesting and get it early (like first 15 to 20 seconds as a hook). They want something that hooks them quickly, they go through 1000s of these.
While New Era is a bit different than casting under Lynne, try to know which archetype (look up Survivor archetypes) that you are likely trying to fill. Here's an old one of one of the biggest legends in the history of the show. It's authentically Sandra, and get's across why she fits. She likely matches that in interviews, she's not trying to be something she's not. You can find multiple other players audition videos, I believe Michele Fitzgerald has posted her two.
Teile deine Videos mit Freunden, Verwandten oder der ganzen Welt
www.youtube.com
Far from an expert on this, as I've never attempted to be cast on anything. But, I've heard enough talk about it from previous players and Adam Klein loosely talk about it since he runs a business helping people with their videos and the process (most notably Kaleb from 45 and Jelinsky from 46, but has helped out some other recent players).
Edit: Best of luck to
@AlwaysSunnyInTampa would be cool to have a poster here make it and come back to this thread.