Generally I really wish canned lines would have become less popular on the forums by this point. The point of coming to these forums isn't the same as asking your older brother for advice; you shouldn't be here for band-aids to your dating issues. You should be here to reform yourself, to make yourself a more confident, a more social, a more likable person.
When I neg a girl I do it relating to what she says; it's got to be your personality, not something you read online, or it's generally more useless.
My two cents, anyways. Carry on.