Sculpture, yes... I'm thinking of mastering the piano to the point you can perform improvisation. Remember he also commands the ability to diagnose disease processes. We're not talking days for that to happen. Plus, think of all the disillusionment he experienced before he decided to attempt at making a positive experience. The final day hints at years of study, years of practice, years of making art before he could instantly create a perfect face out of ice in a matter of minutes. Redeemed, he passes to the next level on his way to Nirvana.