Hi, native Croatian here with good knowledge of English language.
Amateur writer (fantasy), with a creative mind and a knack for enhancing what is already created.
In other words, I feel very confident in rewriting articles.
If nothing else, I would gladly take a test, so to speak, perhaps an article you have in mind and rewrite it, free of charge.
If you like it, I'm sure we can work together.
Of not, well, good luck to us both :)