Here's the secret of my little bookmark cards:
Cardstock: 14 x 14 cm - fold lines at 3 cm - cut line at 6 cm
Design paper: 10 x 10 cm and Triangle: 6 x 6 cm
Scanned Stamp: 7 cm high or 5 cm wide
Little quote or a lovely bithday wish at the back...
They can stand up and also be used as a bookmark.
This one is for my beautifull daughter Juli-Anne who loves to read.