Whether you're trying to publish a manuscript, submit a thesis, or post an article online, your project matters to you, and you want the best deal you can get. I can understand that, and I'm willing to help you as much as I myself would want to be helped when I'm in need.
I'm sure you want your work to be error free, consistent with publishing standards, and comprehensible, so that's what I'll do for you. You can be confident in my command of English (my CEFR level is C2), ability to proofread and edit (I'm highly proficient with the CMOS style guide), and my desire to help you publish your work (I'm an aspiring author myself).
So what do you say? Let's get your project done, shall we?