Hello Max,
I saw your project and I believe I can help, because I am a native English speaker and I work as a teacher (1 to 1 lessons online through Skype).
I would like to learn more about your project as well, who are the students, their level, etc.
If you are interested or have other questions, please feel free to let me know. I look forward to hearing back from you.
Kind regards,
Daryll.