For a piece of art like this, I aways think that the subject should be looking a bit colder. Like, hugging her own chest, grimacing, like she's shivering? At least she's still wearing her boots. I imagine the director telling her, OK, one more, this time nude, same pose, OK? And she's like I'M KEEPING THE BOOTS! Ok, ok Petra, that's fine, that's fine, you're doing great...
I mean, I understand the process by which art like this is produced. And I don't have a kink for suffering women. But still.