Maybe you have ESP and you used remote imaging to "see" it in your mind and then drew it.
ha, ha, it looks like one of those Amazing Kreskin drawings he does, when he picks a person out of the audience and asks them to desribe something and then he opens a sealed envelope that has a sketch of exactly what the person described.
Ok, that was me being nice.
On the other hand, this is a obviously Purposeful joke poster of the EF book cover, cause how could it be such a perfect pardody, or lets say TRAVESITY of the Alan Forbes art.
Maybe you saw it in Juxtapoz as a book ad and you didn't remember.
I sure hope you are very young and that's why the skills shown are lacking, cause it needs a lot of work.