RATE PLEASE, IF YOU LIKE IT.
The drawings came from grand-illusions.com, I have no idea where that guy got them from.
And here is a stopmotion I made for fun. The camera captures the illusion effect at the end.
Step 1: Download and Print the PDF
Download the attached PDF files. There are 3 colors, red, green and blue, pick one, pick all, doesn't matter, but open it, and print it.
Step 2: Cut Out the Dragon.
Cut carefully along the outside, and don't forget to cut into the middle of the dragon at the white line under the head.
Step 3: Fold Your Dragon
For this step it helps to have the PDF file open on the computer, or to have printed out another copy. Around the outside of the dragon drawing, there are lots of instructions on the folding (since you have already cut this out, it might be hard to get it right, so look at the computer pdf). They say mountain fold and valley fold. These are pretty self explanatory, but just in case, a mountain fold looks like this: /\ a valley fold looks like this: V.
Mind that I think there is an error on the head of the dragon where instead of a valley fold, it is actually a mountain. Make sure that along with checking the fold orientation, also check it with the image below.
When you are done folding, tape on the tabs around the mouth and base of the dragon.
Step 4: Operating the Illusion
This is pretty simple. Just close one eye, and stare at the dragon's head. Move it or yourself around a little, and watch as the head pops out and follows you!
If you hadn't just made the dragon would you be able to tell the dragon's head in the image below is concave?