I am working on an English major and love editing, especially for grammar/spelling mistakes. I don't post fanfiction, but I do write a bit of poetry, so if you'd like to check out a little of my work go to asofterdarkness.deviantart.com.
I do have some knowledge of the XMen universe, but I'm not nearly knowledgeable enough to give you trouble about characterization, etc, unless you want a second opinion. I am a full-time student, however I am not involved in a lot of activities on campus so I should be able to IM you or reply to an email promptly.
Thanks for your time.