Hello,
I may not be a 'native' writer and speaker that you are looking for, but, if I am good enough for the people that are native themselves, I believe I can do an amazing job for you. I have been in this business for quite some time and I assure to I excel at things like these. I have edited and proofread thesis, research papers, articles and blogs to name a few and have received high ratings for the sort of work I do. I have never let my clients down and always deliver my work in time. I can proofread up to 2000 words in an hour, edit it and change the sentence structure if necessary and I have just edited and proofread 10,000 worded eBook for another one of my clients in under six hour. If you award the project to me, I assure you that I will be done with the one for you in no time.
I would love to be considered for this position and look forward to working with you....