Unlike most applications, I won't be asking for all the fine details of your character just yet. Until you know more about the lore, you're probably not going to be able to create a character that you'll prefer when it comes to playing. Instead, take this opportunity to review the Game Rules to see what variant rules and homebrew rules are in effect.
The biggest rules to look into are the homebrew feat system, the short rest/long rest healing system, the Exhausted system, honor system and the spell point system. There is no multiclassing. Those can be reviewed if you are selected.
While it might be hard to come up with character concepts now without additional lore, surely you favor certain races, classes, archetypes, personalities, etc. I'm curious to learn about what you lean to below as well.