Answer:
I move without wings between silken strings. I leave as you find my substance behind
I need to be taken from you before you can have me.
I start new then become old. Start clean but be one dirty. I usually start big then become little.
What can be cracked before it's used?
The more it dries, the wetter it becomes. What is it?
Give it food and it will live, give it water and it will die.