Step 25: Pin feet and mouth
Keep the mouth in place with three pins: one to hold the lower lip up, then one to hold each of the bifurcated upper lips down over the bottom lip. Sewing pins work just fine for this.
Now clean up- roll all of the nasty bits up in your plastic table covering, place into a plastic bag, and tie it off. Add it to a trash can that will be emptied sooner rather than later. Wash your hands to get rid of any residual Borax, and you're done.