Looks good! I also think that if you add snow on the buildings nooks and crannies you should consider adding some on the low walls and the wooden barbwire supports aswell, to be consistent
If you don't add any on the truck, I'd suggest increasing the size of the dirt around it and maybe darkening it a bit so it looks like it burned not too long ago, maybe even add some remaining fumes.
EDIT: Damn, quickier ![]()