perfect, hone - make perfect or complete; "perfect your French in Paris!"

modify - make less severe or harsh or extreme; "please modify this letter to make it more polite"; "he modified his views on same-gender marriage"

behave, act, do - behave in a certain manner; show a certain behavior; conduct or comport oneself; "You should act like an adult"; "Don't behave like a fool"; "What makes her do this way?"; "The dog acts ferocious, but he is really afraid of people"