Perfect...

You should interpret this proverbs separately for its being applied in two different circumstances. "Practice makes perfect" is an encouragement to keep on trying and make progress on specific thing that we want to excel with, while "Nobody's perfect" pertains to warning that everyone commits mistakes thus we should not judge others easily to what they've done wrong. For me being perfect defends on the eye of the beholder as what they always say. I can say my wife is perfectly fit to me but I know somebody would disagree and I just ignore it.