I think the phrase "Practice Makes Perfect" is somewhat misleading. After all, the textbook definition of insanity is "doing the same thing over and over, expecting a different result", i.e. practice making perfect? In my experience what practice makes is "consistent", which while conceptually related, is not the same thing. Indeed consistency may degenerate into routine and from there into the greyness of the mundane. However this may be more from a misleading interpretation of the meaning of "perfect", you may well execute the perfect archetypal example of a flawed concept. You may prepare a cookbook perfect Chicken Marengo, but this does not guarantee your guests shall find the ingredient combination of chicken, fried eggs, and crayfish to be a palatable one. To practice unto perfection the playing of scales, or to type a thousand words of inane doggerel a day, still leaves the practitioner at an appreciably vast distance from composing a symphony or great piece of literature. To strive for quality in your work is not quite enough, one must also strive for a surpassing quality of endeavor.