Hey Alessandro, great photo! It is well framed, interesting, and the black and white patterns are really confusing and enticing. I like it very much.
I hope you don't mind I did a workshop. I used photoshop to first increase the darkness of the shadows, the increase the contrast, then increase the darkness of the shadows a bit more. The intent was to make the black and white patterns stand out a bit more, but hopefully still look realistic.
Cheers,
Jordan