I have written a few articles on Medium in Spanish and I can say from experience that as a non native Spanish speaker it is very difficult.

Nuance is often lost and its hard to say what you actually want to say. It takes courage to write in a language that you dont know as well as your native one and you have done that well.

In my book The Tower of Babbling, I mention a few ways that people can improve their writing ability in a desired foreign language.

If anyone is interested in doing that please check it out. I’m sure you might find a strategy that you could use to help you be able to write to the level you want in it.