Hi, after some trial and error I was able to figure it out!
In order to make your graphic visible on the “view gift card” and “print gift card” buttons, change the dimensions listed in the code (outlined in the yellow box) to reflect the dimensions of the graphic you created or the size that you would like it to be.
Also, if you are trying to customize the gift card graphic within the email itself and are ending up with a gigantic image when you preview, try entering thedefault dimensions into the code, not the dimensions that are shown in the instructions, and deleting the next row in the code.
FYI this process does not place your graphic in a gift-card-shaped frame, so you will need to design your image with rounded edges, if desired. (You can see the square edges it gave me initially).
Hope this helps!
~Ashley



