You also need 2 stamps pads (not pictured) one light, one dark. I used SU Positively Pink and Chocolate Chip.
Start by stamping your Happy Birthday stamp in the dark color.Then, ink your large stamp (butterfly here) with your versamark pad (or whatever clear ink you use to emboss.) Stamp image centered over the happy birthday.
Go ahead and add embossing powder (clear works best) and set the powder with your heat gun. Once the image cools, take your stipple brush and rub it on your lighter ink pad. Dab and swirl ink over your embossed image until you have the color saturation you want. The clear embossing will not take the ink and the image will pop out.
Then, mount your card front however you like, add any embellishments, and you are done!