Wrap the wax paper around the candle, wax side down, against the cut out, holding tightly to stop it slipping. See how I'm holding it at the back of the candle? That's so I don't burn my hands using the hairdryer.
I couldn't take a picture of me using the hairdryer, but that's the next step. Apply heat close to the cut out design and you will see the wax underneath start to bubble and the outline of the tissue paper fade.