I have shared it before, but the best advice I was given early in learning to tye flies is "You are trying to make a fly that looks like something a fish eats, not some other guys' fly." Then a personal realization is trout are predators they don't go after the best they go after the weak, the lame, the cripple, imperfect may be better than perfect. I do enjoy the products and efforts of good tyers however.