What experience do you have that is relevant to this project?
I have been working through freelancer for quite a while, although not consistently. I am great at what I do and have the reviews to prove it. I see your bid calls for natives, but if I can work for them, I can do a remarkable job for me.
Proposal:
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 created, 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 can research and write up to 700 words in an hour. Which means that a few hours is more than enough time for me to research the topic thoroughly, write the article and even proofread it to perfection in such a way that it will be 100% unique and pass any plagiarism checker you will subject it to.
Look forward to hearing from you.