Federico, I’m one of your big fans–fantastic work on this vignette, to be sure. The tank is a work of Art, and it looks perfectly at home in its setting, as bizarre as it can seem to some.
I have to say that I was a little bit disturbed to see that you used salt for snow, however. In full disclosure, I started a thread about it in the “Diorama’s” forum here, warning about using household things as “shortcuts” for modeling supplies. I, myself, and some of the commentators in that thread, have had some really bad experiences by doing this in the past, and the intent was to pass on the knowledge and send a warning about the potential consequences. Hope you don’t feel singled out by it in an injurious way, and I hope that your beautiful model here does not suffer any adverse consequences in time. 
The link is here: cs.finescale.com/…/163671.aspx
Please feel free to contribute your thoughts. [;)]