? Cut into the index card a rectangle of 2cm x 4,5cm.
? Print any cute pattern that you want. For mine, i just googled "cute chevron pattern".
? Cut into the pattern a rectangle of 2cm x 9cm and fold it in half.
? glue the pattern onto the piece of inder card.
? take your cutter and cut a tiny rectangle to insert your clip (as the picture)
? insert your clip into the hole and voilà !
OPTIONAL: i don't know if you have this in your country but in France they sell "sticky" plastic cover that you stick on your books to protect them ; i covered my tabs with it to make them more durable. :)