Is knowing your 'type' actually helpful for college auditions?

But what if you’re a really sexy 17 year old girl with a low smouldery voice? Isn’t it going to just freak people out if you pursue your type? What if you’re an obvious leading man, six feet tall, deep baritone etc., but not, at 16, ready to pull off the worldly and debonaire thing? Or are all kids basically juvenile types – ingenues and young romantic leads and comical kids – until they get older?