I think that you might want tolook at the blog history of users like @afrog - @gargon - @dresden - @chinadaily and others. Many of the posts in Non-English languages get some great payouts.

Also, when youlook at posts from @dresden, he can get two payouts from that same content, just by posting in English & Spanish. Sometimes, the Spanish version even does much better, which is neat.

Whatever your native language is, you can post in it, but it may just take longer to get noticed or get a good payout.

The language barrier is a concern. I took notice of this about three months ago, and even offered up my posts for translations, so that bilingual users could translate my posts and repost the translation themselves allowing them to keep all the rewards from the translations.

https://steemit.com/translation/@papa-pepper/operation-translation-now-under-construction-what-it-is-and-how-you-can-help

Check out some of the users I mentioned and see what you think.