A proofreader's task is not to change the content, but to adapt the words and grammar of the given text to match the intended meaning of the text. I can make sure your document conforms to the standards of written and/or spoken standard US (or British) English, without changing the intended meaning. I have proofread textbooks, academic essays, admission and fellowship application letters, and job cover letters. I am a native speaker of English who has written an academic textbook and several short works of fiction (self-published). I look forward to reading your document!