I learned this from Cardmaker Magazine. Place a sticky-note in the center of a white piece of cardstock. Dab a cotton ball into an ink pad. Place the cotton ball in the center of the sticky-note and pull away from the center over the card stock. Repeat in another color, then remove the sticky-note. Add embellishments or a stamped image as I did on this card. The butterfly is stamped on white card stock, then layered with a dark purple paper. The white area around the purple is the white space where the stick-note used to be.