I think that long skraggy tree branch running horizontally from the right gives this pic that spooky feeling. And, of course, the snow cover renders this close to black and white, which forces us to look at the chaos of the lines here. Great pic!
There's nothing like a cold winter day and gray skies above to bring about a feeling of desolation...there's no mistaking it here...good image and good luck in the contest, Hilda.