I do my best, and then I have OTHER people who are good copy editors go over my work because by that time I've looked at it so much I can't see it anymore. (kaitnolan.com)
Even though a good copy editor will go through a manuscript two or three times, she will occasionally miss things. (chriskridler.com)
A good copy editor night catch these or reading your story aloud can help a great deal. (killzoneblog.com)