I wish I could join JET, but there's serious limitations to that depending on the country. (My country's conditions are limited anyways. I checked)
And teaching on the side in my country has strict conditions, one of which being that you NEED a teaching degree.
I did manage to snag an evening school teaching job as a Japanese teacher (those are different conditions so yay) but it's only 2 hours a week...
I'm fluent in English, Dutch (native language) and can manage in French and German.
Then of course there's my Japanese language which I can speak fluently, but my writing takes some more time...
Still high enough to have a master's degree, so it's not really a problem though...