This is a square card. I ended up making a matching envelope for it. I used quick dry crafting glue for the buttons. I also used the Sew Easy paper piercer to do the stitching on the border.
Here is another variation of this same card.
I like the red buttons better but I didn't have enough to make another one. The buttons are from my button jar. Some of them were my Mother-in-law's and are over 20 years old. Thanks Patty!