I altered it just a bit, I started with a piece 4.25" x 11" and scored in the same place she did. Instead of using treat bags, I made 2 pockets with designer paper (this works best with paper weight). Check out my blog for more photos and measurements for the pockets, the link is below.
To make the cards for the pockets. I used a piece of cardstock 4.25" x 3 5/8". I used the SU envelope punch board for the notches at the top. Then I used double sided tape to glue down the chocolate coins.