Sorry Valerio, but this one is not working for me.. It looks seriously tilted down at the left, although from the FG I could be convinced otherwise... The light is subdued a bit too much and killing the detail and while you have included the cloud and sky there is not a lot of detail there either to make it worthy of inclusion I feel. You also have a number of significant dust spots that are distracting...
I think this is missing a good foreground element. You've got a nice mid and background, but nothing to really draw us in. The colors are a bit subdued, which is OK, but it doesn't lend itself well to catching the eye with this scene.
The horizon tilt is obvious, and it looks like the sensor needs a bit of cleaning as well.
Hi Valerio, ditto on the comments above...a tighter pano might have worked better for you here as there is little interest in the foreground or the sky. There is potential here, hopefully you are able to revisit this location again in better light...I return to my favorite locations time and again waiting for something a little extra special.