As you roll the ball, you will feel it start to felt. Resist the urge to squeeze it, as the secret to getting a perfect pearl is going slow and gentle.
Some artists prefer to see their work take on a life of its own, only knowing at the end what the final product will be. I have a hard time working that way.
I am working on a line of silver and felt jewelry. I am sculpting fine silver “egg shells” which will be turned into earrings set with a “felt pearl”.