Ames window illusion fail? Read text below.

Although the window is turning it looks like it is going back and forth.
I built my own version from a piece of foam, but can not see the illusion.
Fail? If so, why? :-)

[minkmiau]

I think it's very hard to make it right

[razzodjo]

Stephan ist das dein Bildschirmschöner, ?
Ich dachte gadt ein Flugzeug Video :))

[parveenakhter]

Is the Ames window fail or this is the wrong angle?