I printed the page and allowed it to dry. Next, I marked where I wanted the gift card to be, then used an exact-o knife to cut around the white circle of the bullseye.
Then, I slipped the gift card down in. By keeping the opening snug, it should stay in place on its own, but you can add a piece of tape under it to be sure. I attached the card to a piece of plain black card stock, to help keep the card in place.
Next, I dressed it up with some baker's twine (purchased at Michaels) and a chalkboard gift tag (found in the Target Dollar Spot!). It would also be easy to use some of the extra black card stock to create a tag. I used a metallic silver Sharpie to write on the tag.
Here is a link to the free printable. The card is a 5" x 7" card, and you can print this page with 2 cards on a regular 8.5" x 11" sheet.