When I saw the thumbnail of this shot I first thought it was gorgeous, and I stand by my initial feeling.
The way you have framed the guitar is a classic composition which has been used again and again in photography over the years. However, when I realised you added your own unique flare to it with the snow, it turned from another one of those I'd seen before into something quite different. The contrast between that brilliant green colour and the white really is lovely, especially with the small amount on the instrument itself right at the bottom. What I would say however is it seems as if the guitar has been placed there; if you were going for a more natural look (as natural you could get with something like this..!) then I'd suggest playing with snow on and around the strings a bit more, or on the metal knobs on the body.
My only major critique though, and this is by no means negative, is I'd just like to see a bit more sharpness within it. I understand equipment constraints but a few minutes in Paint.net would really punch up the definition in this shot. It's not strictly a critique just something I personally would like to see!
Overall though, a very unique and original photograph! Like I said, you've taken the original framing of a guitar over the years and added your own to it, and pulled it off really well. Good job!