I recently did this type of card with my stamper's group. I found a few tutorials, improvised on them for the group, but didn't really like any of them. They weren't easy to follow, the photos in them didn't really help me and I knew I could make a better one :p So below is my own tutorial. The sketch I used is from Freshly Made Sketches. It works perfectly for the Treat Cup cards.
1. For your standard A2 card, cut a 8-1/2” x 11” piece of card stock for your base, a 5-1/4” x 4” piece of card stock for your mat and a 5” x 3-3/4” piece of card stock for your card front.
2. Decorate your card front with any designer paper, etc., that you will be punching through. Choose where you will be placing the Sweet Treat Cup and punch out a hole in your card base with the 1-3/4” Punch.
3. Place your card mat (Cherry Cobbler here) and card front (Early Espresso with Designer Series Paper) on your card base and position it as desired. DO NOT adhere.
4. Carefully flip the card over. With a pencil, trace the 1-3/4” circle through the card base onto the Cherry Cobbler mat. This will mark where you will punch out the circle for the top two layers.
5. Punch out the 1-3/4” circle through the top two layers of your card. Now all three layers of your card have the 1-3/4” circle punched through them and will align properly.
6. Remove the adhesive from the Sweet Treat Cup and adhere to the middle layer (Cherry Cobbler on this card). Adhere the top layer of your card (Early Espresso here) onto the middle layer, fitting the hole over the Sweet Treat Cup.
7. Cut a 2” x 4” piece of card stock for your slider. Position it over the hole in the card base (Early Espresso layer). Using Sticky Strip (to make sure that your card doesn't fall apart – the treat cup layer is quite heavy) create a 'frame' for your slider to slide in and out of and to keep it in the right spot. Put Sticky Strip on the rest of the card base and put your card together.
8. When you've put your card together, you'll see the slider through the Treat Cup as shown in the picture below. The slider goes between the middle layer and card base (Cherry Cobbler and Early Espresso).
9. Fill your treat cup from the inside of the card.
Funny thing, I didn't actually do any stamping on this card, except the Merry Christmas. But I did use a bunch of accessories including the Letters to Santa DSP, Perfect Pennants Bigz L Die as well as the Stocking Accents Originals Die. Isn't the Cherry Cobbler Waffle Ribbon just yummy? Love it!
Hope you enjoyed the tutorial and the card. Keep letting stamps bring out your creativity!