Digital stamps are particularly good for creating shaped cards since they can be enlarged, stretched and skewed, and if you're in a bit of a hurry, you can even print the coloured version to save some time. I printed one of the gingerbread men from the Sugar & Spice set at a little over 5" tall to create my Christmas card, and I've included some step-by-step photos at the bottom of the post.
Enlarge, print and colour the image.
Fussy cut right up to the printed line.
Place the image on a card blank with a portion overhanging the spine of the card. It can be top or side opening depending on the design. As you can see from the image below, it can be on an angle if you prefer.
Use a pencil to trace around the fussy cut image.
Cut the out the shape keeping the scissors just inside the traced line for a neater look. Make sure you don't cut through the spine of your card.
Glue the image to your card front and add additional decorations and mediums as desired.
Stamps: