I've read a post over at Stampin' Addicts trying to figure out the best way to get stamped images lined up on the labels cut from the Matchbox Die. I was reading this again tonight and inspiration hit. I took the cardboard that came with the die and cut it to 2 1/4" x 7", placed it over the labels section and ran it through the Big Shot . Next I stamped the image, cut the cardstock down and taped it to the cardboard template centering it in the cutout , then I ran it through and voila, not perfect because I didn't tape all four sides but you get the idea. Here's some pics:
Hope this helps you!