Even camping in the snow, as long as you have two suitable trees, you'll be comfortable.
Having spent a few nights elevated, I've learned a few things. Keep your gun and your boots directly below where your feet dangle when you sit up.
Bring a pee bottle-like a wide-mouth Gatorade-because getting up at 0130 sucks!
If you don't have a pad underneath your sleeping bag, it's much colder (the bag compresses, leaving you little insulation).
A tarp, folded in thirds, with a sheet bend on the end also works.
Anyone else sleep in a hammock?