Print out or drawer your stencil on a sheet of paper.
Lay a sheet of wax paper over the stencil.
If you are using a plastic stencil, yo can lay it on top of the wax paper.
Use a squirt bottle, pastry bag, or paint brush, and fill in the stencil.
Spread a thick payer of icing, or chocolate etc. to fill in your stencil.
Lift the wax paper and gently shake to be certain the icing or chocolate is even.
Use a small paint brush and carefully be sure all of the design is filled to the edges.
Leave stencil to dry.
After stencil has dried, gently peel off of waxed paper, and place on your cupcake cake
If you are making butterfly wings, be creative, by using gel icing to make the butterfyl's body, mini M & M's for the eyes, licorice, or small jelly beans.