Honestly, this photograph doesn't really leave me anything to say... just that it is amazing.
You did a fantastic job with the angle of this, and how you captured the picture not too close, but not too far either. The colors all go very well together, with the silver key and the sort of blue background blurred to bring out the object. The frost added a nice touch, bringing a "cold" feel to the image. Since it's difficult for some to find anything to photograph in winter, this piece is very original and eye-catching. I didn't really like the green on the tree to the side of the photo, but I know it was beyond your control since it is the trees natural color.