The Thin cuts I used today are the 'hello' and 'thanks' set from CTMH. They are perfectly sized for cards.
Thin Cuts—Hello & Thanks
My patterned paper is from the Sugar Rush collection and the inspiration for colors.
I think the cuts alone are great for the card sentiments, but you can also add a little stamped sentiment too (which I did on a couple of the cards with the Short & Sweet A1189 and Sending Smiles D1708 )
You can grab these and all the other Close to my Heart Thin cuts for 25% off all March long (that even includes the Thin cuts with stamps bundles)