"My dreams are lucid" is a little vague. Unless you really have a firm grip on what "lucid" means, you might want something more direct. I really like the first part about knowing if you are dreaming. Maybe something about recognizing that you are dreaming. That way you can imagine yourself recognizing the dream, and becoming lucid, and reality checking. Or maybe, "I am lucid and aware of myself and my surroundings." That way you don't limit it to only in dreams.