Love the snowflakes on this one. The eagle is nice and sharp and I like how the rear wing is behind the head. I do think this image would have been even more powerful had you only had snow in the BG but unfortunately that is not something we can control. Well exposed also.
Framed a bit tight for my tastes too. Great head and talons. Wish the near wing was not quite so end on, but the head is such a strong focal point that it still works for me.
There is a vertical line in the snow just off the tip of the rear wing, which looks a bit odd.
I would go for a less obtrusive signature, it really draws the eye against the snow.