Here's my Instructable on how to make an adorable little monster bookmark in a little less than 15 minutes

Step 1: Supplies Needed:

A square piece of card stock or craft paper, scissors, white paper, black paper OR black rhinestones (for the pupils; I used black rhinestones, but paper works just as well), glue stick

Step 2: Crease Your Cardstock

Make a crease both ways on your paper, making it look like 4 equal squares. Easiest way is to fold it in half horizontally, then unfold and fold vertically.

Step 3: Cut the Lower Right Square Out

Make sure you cut the Lower Right Square Out, not the other ones

Step 4: Fold and Glue

To the left of the cut out, fold in the paper, making it a triangle. Glue it shut. Above the cut out, fold outward, making it triangular.

Step 5: Cut and Glue More

Cut out some teeth out of the white paper, in a strip. Glue it to the folded piece in the upper right corner. Glue the folded piece together. Fold it inward, and take the first piece you glued together and fold it over the teeth piece. Glue it down.