FFXIV x Twitch Collaborative Campaign

Hello there.
That a very nice event for FF XIV Streamers in twitch. FFXIV x Twitch Collaborative Campaign
But i would like like to know
How i can join in this event as a Streamer?
My channel is twitch.tv/jbulaboi and i'm from Brazil
I'm sure that other streamers frpm Brazil would like to participate also.

The streamers were handpicked, most likely.

It's a pretty short list of streamers, so I assume they are just picking specific ones rather than just anyone who meets a qualification.