SparkFun Paper Circuit Kits
Contributors:
Gella
Punch Hole
Before finishing the project, punch a hole for the LED to go through. You can use a hole punch or carefully cut with scissors.
Depending on how centered you placed the LED over the gap in the copper tape, you may need to slide or slightly move it. Simply peel up the clear tape and adjust to center the LED in the hole. Then secure with some new tape. Fold the card over for a preview of where the LED will shine through on the template's design.