Nice idea
It's an interesting idea, but I think you could have made more out of this. The snow for example is plain white, which isn't very convincing. You could have added some ups and downs, some little lumps of snow here and there to make it look like real snow.
Also the hand and the foot are pretty small compared to the persons face.
It's a funny idea, but one needs a lot of fantasy to really see the avalanche here. Without the title I would have thought it's simply an unfinished picture.
Too bad, because the eyes, hand and foot themselves look very promising.