Hi. Although I live in Brazil now, I´m an American writer, editor and proofreader, a native English speaker with excellent language skills and years of experience at producing, correcting and improving books and all kinds of texts. I can use Word´s Track Changes to show my corrections, comments and suggestions in your text. My basic fixed rate is $10 USD per 1000 words, but I offer discounts for work that is not urgent, or for large volumes of work. Please contact me for further discussion. Best, David