The typography is lovely. The “Thank you” especially - love how you merged the K and the U together. The decorative ascenders and descenders are just perfect - not too complicated or too delicate. Very nice.
You know, if fellow deviants really do come from around the globe to this jubilee, how about using these cards as small autograph booklets, to help remember this good day and have a look at some of the other deviants that do come here. They could write down their deviant name for you to look at back home.