Since Meg's Garden prints on long sheets, you get a 12x12 plus a 4x12 strip (single sided) with every paper in the collection. 4x12 is a perfect size for cards! I used the coordinating strip for the outside of the birdhouse roof. As you can see, the florals are a fussy cutter's heaven. The papers aren't too thick to cramp up your hands so fussy cutting is made very easy with these papers.
Here is the underside of the roof - I created a card by glueing another excess paper strip (back to back) from a different sheet in the collection - which is the inside of the card. All it needed was a stamped phrase to complete it. To attach the card just use a clamp clip to the top of the box and decorate with lace/trim.
Here are the modifications (in yellow) to my original template. You need to put the hole at the outer edge instead of third row in (that was the position for the window for gingerbread house) and you may want the box a little taller (optional). The roof a little wider than the gingerbread house version too so that you have this lovely overhang. The same for everything else though!