This was probably the easiest challenge yet. Thank you Mary! I started out with a major problem because I don't have postage stamps or dies. I was considering using a few real postage stamps somehow. Then I saw Tessaduck's card using post card dp, and all that remained was digging up my little scrap of the same paper.
I don't think I've made any of my hycct cards into birthday cards, so that's what I did with this one. Besides, the birthday sentiment image sort of looks like a postage stamp.
Birthday Gone Postal