2D or 3D? Optical Illusion

*Optical Illusion

I am just so curious about how it is made. Honestly, I saw this a couple weeks ago, and I try to print out something similar to that, but none is close to the great effects in the clip.

In order to make this illusion, you have to know the angles, and you will have to stretch out the original object in 2D. Also, the shadow is essential. Even with a tiny error, you fail, which is my case, LOL. I tried to copy the illusion but with a simple object - a black cube. Yet, the results turned out to be very UNLIKE. I will have to work on it more to reach the level in the clip.

*Unfortunately, I don't have the photos. They are in my old laptop.