OT continues....
Your cards sound really cute. Mine are usually layered blocks of paper with some sort of an embellishment.
The last time I gave one away, one of the other guests examined it closely and asked me questions about it. Nothing bad, just idle curiosity, but I felt like I hadn't done anything special and since then haven't made any. I just let my husband buy cards from the store instead. (Honestly, it's more a time issue than anything, but I did stop trying as hard to make them.)