Turn your cardstock to the short side and score at 2" and 6 1/2".
Using your diagonal scoring plate, you will need to make diagonal score marks that emanate from the intersection of the center score lines back to the edge of the paper. You will have to rotate the diagonal score plate to get the score line in the correct slanted direction as you score these lines at 8 1/2" and 2 1/2".
Fold the diagonal score marks as shown below.
Apply adhesive as shown in the picture. I used sticky strip for a strong hold.
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