The instructable said to draw the image on the book; my problem is a word or image might get complicated and I am horrible at drawing. Searching the internet led to several images but no English instructions. I did find this page in French and used the screenshots to recreate instructions for folding using a graphics program I had available. It has also been posted as an instructable.
The beauty of this project is its simplicity. The image is made by simply folding the two corners of each page. No cutting, gluing, or special equipment needed.
**NOTE** When trying to find instructions for book folding I found the above referenced page in French, did not see the translation. I used the screenshots to infer the method but did not originally reference that page. That was wrong of me and the author has my apologies.
Step 1: Materials and Tools
Ruler- I used an engineering scale with 1/10th inch markings for ease of measuring
Pencil or pen
Plastic or stiff paper for folding template
Computer with basic graphics program