I did one too but my measurements are different. Here is what I did...sorry about my inability to take a picture!
Cut one card base 10� by 7�.
Score the 10� side of the card at 2 1/2�, 5� and 71/2�. Fold mountains and valleys. Mentally label your folded areas A B C D from the left**.
Make a mark 1 1/2� up from the bottom edge on the left side of your card on the 7� side.
Line up the card in your cutter from that mark to the first fold and cut. That gives you the diagonal line.
Cut 3 strips of two designer papers 2 1/4� x 7� for you four areas.
**A area needs a 2 1/4� x 2 3/4�, B = 2 1/4� x 4 3/4�, C = 2 1/4 x 6 3/4�, D = 21/2 x 7�
You can trace angle onto the designer paper or mark* and cut.
*a= 1 1/4�, b= 3� and c= 5� from bottom edge of strips; cut angle from mark to upper corner.