As you can see, with the 3d flower, this card has quite a bit of dimension. So, when sending dimensional cards like this, in order to preserve a bit of that dimension, you may want to try the 3d box envelopes.
You can resize those boxes just like you would the regular envelopes using this tutorial. You will notice that when you size the box to fit a 41/4″ x 5 1/2″ card, the shape is longer than the mat. Not to worry, rotate it slightly to the right or left and it will fit nicely in the center of a 12″ x 12″ piece of paper.
Once you’ve sealed the card, add a cute print & cut label to the front of the box and it’s ready to give away.