Copying Donatello (no, not the turtle).

"Starting with a pencil sketch before working with a series of ever-finer tools to ‘nibble away’ at the stone, Smith offers an immensely satisfying glimpse into how one of history’s great sculptors created dazzling, emotive scenes from just stone, shadow and light."

https://aeon.co/videos/from-a-pencil-sketch-to-cherubs-dancing-in-stone-recreating-a-donatello-work