Snip to the scored lines parallel to each other on the long side and use Multipurpose glue to hold to together. I stamped the truck image and then cut it out with Paper Snips and traced it onto coordinated cardstock for the other side. However, you could do a mirror image, but I didn't. When you attach the trucks to the box make sure the wheels are below the box because they are what will hold the truck box up. I filled them with candy.
Products I used: