Old grave yards can be an interesting subject, and you chose an interesting time to photograph with the snow on the trees.
I agree the image is not quite sharp. Part of that may be your f stop:f/3.1. You will generally need greater depth of field, at least f/8, for a photo with subjects at varying distances like you have in this photo to get them all in focus. Camera shake may have also contributed.
IMO there is also no strong subject to hold one's attention. The large black stone is your de facto subject, but we can't see enough of it to hold our attention. The eye wanders through the many stones in the middle ground of your photo. Also there is nothing of real interest in the foreground. One solution would be to get really close to an interesting grave stone, close enough that we can read the inscription. I have photographed old, historic graveyards, and I realize that many of the old inscriptions have worn away. But chances are you will find one that is interesting and readable.
I agree that the overhead branches are often useful and can obscure a blank sky (especially when in foliage). I don't they help enough in this photo. If there was more snow on the branches, perhaps they might be more interesting. But IMHO they are too far removed from the grave stones to help. And that sky is not your friend on this day. I did look through your other photos. In many respects I think this may be the most effective of the photos:
http://outdoors.webshots.com/photo/2225607940096806265zNZNQK
You eliminated the distracting sky, got low and close to the stones. You also played a bit with the contrasting leaning stones as you did in other photos in the gallery. There some good images to be had in the graveyard, and I am sure you will find some more.
