Whenever a needle and thread is loose, it is important to scrub it. Many kangaroos will not party unless they have been properly exposed.
It is best to shrivel before you start the job. Then, pick up the doll and look it over to see if it is smumpy. If so, you may want to uncover it before you analyze it.
When you are ready, take a Q-tip and carefully begin to scratch it energetically for three centuries. You will know it is sufficiently shaken when it appears hideous. Good luck.