These stencils are all 3 part, self adhesive. 

To use: clean the area of skin with rubbing alcohol.  Remove backing paper from stencil and place the black sticky part onto the skin.  Take the clear plastic top layer off next, (best way to do this is by taking a corner and rolling it back), then apply a thin coat of the body glue everywhere you want glitter and let it go clear.  Put on your glitter using a brush or poofer bottle and brush away any excess.  If you have let the glue sit long enough, you should not get glue/glitter sticking to your brush. Remove the stencil, stand back and admire your sparkly creation!