Step One:

Using your low temp glue gun, place a bead of wax on your desired surface.

Step Two:

For a much easier and appealing outcome, lightly spray your stamper with cooking Pam before you apply the highlighting ink.

Lightly dab your stamper in the highlighting ink. Don't press to hard or there will be a lot of excess ink on the stamper.

Step Three:

Making sure the wax is still warm, place your stamper on the bead of wax. Leave the stamper in one place until the wax has cooled.

Step Four:

Once the wax has cooled remove your stamper and view your beautifully highlighted wax seal!

Tips:
If this process does not work effectively for you, use the alternative method. Create your seal first, then using a paintbrush, paint on the highlighting ink after the wax has completely cooled.