I'm french; as a matter of fact, I believe I could provide a french writting a way faster than anyone who'd know french as well as any other lenguage which is not is own one.
I do love to write and I've been studying and working as a french teacher, what makes me sure of grammar/spelling issues.
I'm used to write; since I'm a little girl, I used to write stories and have had to be dealing later with writting two academics reports for ending both of my bachelor's degrees (in Architecture and then in Education).
That's why I believe I could write as much as you wish about any topic you required, on time.