I don't have too much criticism for these cards. The Calling Card inserts are good, but not great. I think it would be tough to come up with something better without changing a bunch of the design elements.
One nitpicky thing to change would be to take the "Heart-Felt Habit" line and remove it from the front. I think it would declutter the nameplate a little. Let the card speak for itself, then leave the back to explain it.