Hey @icycranberry
The Cardano Foundation runs the ambassador program and they are the ones who accept or reject the applications.
I think the ambassador program is at a point where its really difficult for an english native speaker to get accepted to the program, as there are already alot of them in this program and the Cardano Foundation are looking to have ambassadors from all over the world.
The best way to proof that you are the right person for that program is to keep creating high quality content. Sooner or later you will be accepted to the program. 
Cheers
Fabian