"I finished mine before."There is truth in doing real things, and the opportunity to learn in greater and even greater depth. "Been there, done that" is what you hear when you have only touched the surface of the subject, and is an obstacle to the development of skill.
"Did you get really good at it?" I asked,
"Oh, yeah. I did real good."
"Show me what you did and show me your technique."
"Oh, I think I'll start over. I need more practice. Will you show me how that one knife cut again?"
Toysmith added suggested reading in a comment below on this subject, Mastery, the Keys to Success and Long-Term Fulfillment, by George Leonard.