Step 1. Create your stencil
Test the design of your placemat (or other chosen material) by applying a light spray of paint over the entire area onto some spare paper. By testing first, you can see the effect it will have and you can then mask off any areas you wish to remain clear for the mirror.

Our placemat had a wonderful border so we blocked off the entire inner design with masking tape. We cut off small pieces of tape for the tricky corner areas and then used larger pieces to fill in the center.

Step 2. Spray glue the stencil in place
On the reverse side of your stencil, spray a light coating of adhesive. Spraying on only one surface will allow you to easily stick it on and peel it off again once you have finished. Do not spray adhesive on the mirror too, or it will bond both surfaces together.

Turn the stencil over and stick down in the correct place on the mirror. Smooth over with your hand to ensure it is stuck down correctly.