So you don't find the very limited DoF bad, Mahassa? I think about that after the comment of Ahmed, and I do think that perhaps a bit of a less limited DoF could add much to the image.
Thanks a lot for the nice comment and the idea, Ahmed!
In fact the foreground is sharp, but it stands much closer than the image suggests. It was the dried leaves near the bottom left that I focused on, but left the snow at the right of the tree quite out of focus. I used quite a big aperture but it was too big and limited the DoF to those leaves that are a very small region of the image and so remain unnoticed.
A bit narrower aperture next time, which means that I must wait until winter!