Hi. Although I live in Brazil now, I´m an American editor and proofreader, a native English speaker with excellent language skills and years of experience correcting and improving books and other texts. My specialty is correcting English grammar, spelling, punctuation, vocabulary and sentence structure. I can us Word´s Track Changes to show you my corrections and comments in your text, if needed. I would be happy to take your test as a demonstration of the quality of my work. Please contact me for further discussion. Best, David