In the book the authors used plaster gauze over a mask. I mainly work with ATCs and wanted to try the gauze with smaller objects, I started with two butterfly charms. Cut the plaster gauze into strips long enough to cover the surface.
plastic wrap backgrounds made earlier and placed a wet strip of wet plaster gauze over the surface. I pulled the plaster gauze apart a bit and used a paper towel to soak off some of the plaster.