Hi. Although I live in Brazil now, I´m an American editor and proofreader, a native English speaker with excellent writing skills and years of experience correcting and improving academic writing and texts of all kinds. I use Track Changes to show all my corrections of English grammar, spelling, punctuation, vocabulary and sentence structure, and offer suggestions for improving what you have written without interfering in your personal style. I am currently performing a similar service for a doctoral candidate doing river basin studies here in Brazil. Although you asked for hourly rates, if you tell me how long your manuscript is (total number of words), I can´t calculate the complete price of my services at a single fixed rate, which is usually more economical for you. Please contact me for further discussion. Thanks, David