Dear Ridoy, I'm a native Portuguese speaker, I have a degree in Languages, Literature and Cultures, and a vast experience as a writer/author and as a translator (websites, legal and technical documents, articles, eBooks, you name it). Being mandatory to be an impeccable proofreader too, I can give you 15 articles in Portuguese and a flawless translation of your 500 words into Portuguese. Best Regards, Vítor Cortes