Giftcard holder for dad

I made this gift card holder for my husband's dad for father's day (sorry for the quality of the photo - I took a picture last moment as we were running out of the door).
I saw the tutorial for this gift card holder on Karli's blog (my dear Glitter Bee), it's made out of an envelope...

Here is the look inside... Thank you, Karli for wonderful tutorial, it's amazing how simple this was.