First of all,Welcome to the Big A,Chris!Nicest site I've found to hang at.
I like your dio and it's goal a lot and you have done a really good job so far IMO.What I suggest is instead of a weapon or jeep,use a farmer's cart with a broken wheel,kilted over some,kinda angled off the road way towards the tree(great tree!!).Weather the hell out of the cart.Pile the snow around it and on the tree limbs.Lots of icicles from the tree and cart too!Mud and dirty snow make good visuals for discomfort along with the icicles,etc.If you really want to show bleak and despair,and this is kinda a controversial call on your part,but a dead horse or mule partially buried in the snow with the cart would be pretty powerful.Up to you,always!

Oh,I would remove the fence.Just doesn't add to the scene or your goal.
another 2 pennys for the box.....
cheers!