I can suggest two crops: You can crop just below the top left reflection/ice build up. Reason is that I find that part disturbing to the quiet golden light of the uncluttered background. and draws too much attention to itself at expense of the whole image. The downside is, I think the image needs that top space to give the subject room to breathe; or you can crop right around the actual rock and tree formation, almost square, more intimate. This allows the eye to move with the natural circular movement of the bough. Lovely light.
JR