Start by printing out the boxes. When using a cutting machine, I scale mine to 9.25 H x 6.5 W in Design Space. Be sure to import the SVG with the scorelines.
For my advent calendar boxes, I set my material to medium cardstock. Once the scoring is complete, you will need to remove the scoring tool and replace it with the fine-point blade to complete the cut.
Remove your DIY advent box template from the mat by peeling the mat away. Fold your advent boxes along the scorelines. With permanent scrapbooking tape, I add adhesive to the four edges.