I've won an award for my editing during my time running a student newspaper and I am the go to person for a lot of the university staff when they produce any content. For any professionally published piece of work, whether it's a short article or an entire book, it is absolutely necessary to get someone else to proofread, edit and discuss your work. It is vital to ensure not only that there are no mistakes in the work, but also that it reads well and all of your arguments are presented in a clear an concise manner. I'm happy to work just with spelling and punctuation, or can edit and restructure text as needed, always with a keeping the aim of content in mind.