The last time I did the candid challenge I submitted a dog photo and was promptly informed that animals don't count as candid. So you may end up with some low scores or DNMCs. Personally I like this picture.
I'd straighten up the horizon, or I would make it more off kilter - it is distracting being just a little off. The dog and tongue and great, and I like the effect of having the snow entirely blown out - makes the dog seem almost ghostly.