First, I started by creating the background with heat embossing diamonds in white and adding colors with watercoloring. After color dried, I stamped the heart-shaped diamond in black and cut out for LEDs light through.
For the circuite, I drew parallel circut template on the black card base. After sticked the copper tape over the templae, I sticked some white LEDs. Instead of using pink LED stickers, I used white LEDs in this card. To get the pink light effect, I colored white LEDs with red marker!