I probably could but I don't think I'd enjoy it. If it were the type of thing I enjoy reading I would probably get into it and forget I was supposed to be being critical and only catch the glaring errors; and if it was not something I enjoyed reading I'd probably do a better editing job but then I think it'd bore and kind of aggravate me.
I'm sure my formal English skills are lacking somewhat, as well. Although I DO know "they're" from "their", at least, and I can usually figure out when to put an apostrophe in "its"!