You will need:
Piece of cardstock 8" x 12", pencil, ruler and scoring board (optional)
How to:
DOH !!! the bottom score lines should all be the other way !! ie: where it says mountain it should say valley and vice versa.....sorry everyone !!
1. Place the card in landscsape mode and measure down 2" on each short side and make a small pencil mark. Draw a faint pencil line between the two marks.
2. Now score from bottom upto pencil line at 2" and 4".
3. Score completely from top to bottom at 6".
4. Repeat step 2 at 8" and 10".
5. Following the above diagram, cut between points A and B.
6. Again, using the diagram to help you, fold each piece as shown.
7. A mountain fold pops out towards you and a valley fold goes away from you.
Here are some the cards I have made using this technique