I am an Estonian speaker who would like to get courses on Estonian. I would be happy to contribute, and even though Estonian is a very small language, I think a lot of people would benefit to having the courses. Please consider my request.
Yours sincerely, Lumememm.
P.S. We could also have English for Estonian speakers, which would be very useful.
You will probably have to find a few others who are able and willing to contribute to the course. Duolingo wants to have a bit of a stable team around community provided languages, in order to make sure that the investment doesn't have to stop halfway through development, or that it turns out that the course is no longer being maintained after a couple of months.
I also know Estonian (even though I am Croatian ) when I see your Estonian starting in the incubator I will also help you make it