When you're able to create a piece of art, let alone a GIF that is powerful enough to catch someone's eye off the front page and absolutely force them to click on it, you know you've done something right.
I suppose the first thing that caught my eye was all the moving parts. I can only imagine how long it took you to make everything pop out and then make it rotate. You've truly outdone yourself on that part.
The other thing that really makes this so attractive is all the changing textures. When the box is fully expanded outward, it takes on the liking of a spongey texture. However, when it's retracted, the lines look almost like thin silk or spider webs. Nice job there.
Honestly, I don't know where to say you've gone wrong here. Everything, the rotation, the texture, even the glow are incredibly powerful. The fact that you've done this on a GIF is what makes it even more amazing. Again fantastic work. Keep it up!