This is a really fun technique using alcohol inks (any brand), Adirondack Alcohol Blending Solution (looks like this), glossy card stock, ink blending tool with felt pads (I use Tim Holtz's, which looks like this), Versamark watermark stamp pad, white embossing powder, and your heat tool. The first thing you want to do is stamp your image (a bolder image works best) onto glossy card stock with Versamark and emboss it with white embossing powder. You can barely see it after heat setting it.
The next step is to place a couple of drops of two or three colors of alcohol ink on your blending tool felt pad and then a small drop or two of blending solution. (I used Pinata's Chili Pepper and Sunbright Yellow for this example.) You just pounce the blending tool all over the paper until you get the look and coverage you want. Add a couple more drops of color and blending solution if you need to. It should look something like this:
The final step is to use your heat gun and reheat the embossing powder. The white should begin to slowly show back up. And here is another example of a finished card - quick and easy. For this one, I used monochromatic colors (Pinata's Sunbright Yellow and Adirondack's Butterscotch). Make sure you cover your work surface or use a non stick mat so the alcohol inks won't stain anything. Have fun making your own creations. Each one will be unique and look somewhat different.