Here's how to make a pivot card. It may take a couple of tries to get the hang of it (ask me how I know), but the end effect is well worth your patience!
Start with an 8-1/2" by 2-1/4" strip of card stock. Score the card stock in half (at 1-1/8") lengthwise.
Use your cutter guide to mark the card stock strip at 2-7/8" and 5-1/8" along the long sides of the strip.
Score between the diagonals....
...so that you produce an X in the center of the strip.
Use your bone folder to ensure you have strong, crisp folds. One leg of the X will be a "mountain," the other leg will be a valley. Fold this piece together so that you have an arrow like this.
Use a strong adhesive (I used Tear & Tape) on the triangle portion of your "arrow" and adhere it to the inside of the card.
Once you have adhered one side of the arrow to the card, apply your strong adhesive to the exposed triangle and close the top of the card over the bottom of the card so that your pivot piece adheres to both the bottom and top of your card.
Next cut a 9" by 2-1/4" strip of colored card stock. This will be the mat for your images on the inside of the card. Score this strip at 2-1/4", 4-1/2", and 6-3/4" across the long side.
On the pivot piece, apply your strong adhesive to the top half on the right side and to the bottom half on the left side, as shown. Then carefully line up the center of your colored card stock with the center of the pivot piece and adhere.
Adhere 2" squares of card stock or designer series paper to the four sections of the colored card stock and decorate as you wish.