The image is used is Lovebirds from Squigglefly. I printed the image on Sparkle Blanc and also used Sparkle Blanc as my card base. The cool thing about the sparkle paper, besides the sparkle, is that the sparkle still shines through your color medium. Here I colored the heart with a Strong Red Copic and the sparkle still sparkles! 
The image is layered on Sparkle Vermillion.
