This certainly looks better in person. It is called the stained glass technique. It is the Monday challenge this week on SCS. Basically you stamp on acetate and then from the underside you paint on colored (with reinkers) crystal effects (in my case Diamond Glaze) and mount it on a cut out window with white card stock beneath. Make sense? It was my idea from that other card to cut out along the seashells :) You are supposed to stamp a sentiment on the white part to show through the clear part but I didn't like it. Kind of ruined the picture to me. So there you have it! Hope your not getting sick of the beach themed cards :)