You will need several Pigment ink pads, heat gun, spray bottle with water, a piece of waxed paper all scrunched up and of course card stock.
First thing we are going to do is take the lighter color and push the pad into the card stock. Smoosh it all over filling the card stock.
Now use your heat gun to set the color. This is drying your ink because pigment ink does not dry fast.
Take the second ink pad and do the same thing. Cover it all over.
Spray with the bottle filled with water. You just want to mist it. You can go back and add water later if you need to.
Take that scrunched up piece of waxed paper and pounce all over your piece. Wipe off the waxed paper as it is filled with ink. This is where you can add more water if you feel your ink is not moving enough.
And here's your background.