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 revising books and other texts, especially for authors for whom English is a second language. I use Track Changes to show my corrections and comments in your text. I can provide samples of previous work, and I´d be happy to do a small sample edit for free to demonstrate the quality of my work. In order to calculate the price of my services on your project, I need to know the number of words in your book. Please contact me with this information or with a copy of the text, so we can discuss your project further. Thanks, David