I've been beta'ing for QAF fan fiction for many, many years - one of the originals. I'm very good with spelling, grammar, sentence structure, and continuity. I'm extremely honest and will give my opinion, both good and bad.
My philosphy is that the story belongs to the author - it's my job to help make it better but not to rewrite it.
I will not do mpreg or completely AU (stories that take place in another timeframe, for example).
Feel free to contact me at email@example.com.