A drywall question?

If I take drywall and carve out the shape of a woman in the sawdust, which is from a living tree, how long before that sawdust evolves into a hot woman? Yes, I know that first it will evolve into a fish, then a gator, then a gizzly bear, then a cat, then a monkey, then a monkey-man creature, then finally a female. but how long does this process take? And, with all the scientific advancements from stem cells, can I be kept alive long enough to see the sawdust become human, or would it only be a turtle when I die?