[quote=@Shadowcatcher]
nearly done with my character. Should I post it here when its completed?
[/quote]

I'd hold onto it until I get something official up. Which will probably tomorrow.

[quote=@Revans Exile]
Season 2 didn't really cover how one was chosen, I may have to make shit up. I'm thinking a lottery system.
[/quote]

Agents were chosen normally. Like any other federal agency. After SHIELD resumed under Coulson, SHIELD hasn't hired many new recruits. If that helps you at all.