Upload & Sell: On
I think you have to choose: expanse of the sky or expanse of the sea. The sky has little detail and there is more potential interest in the snow covered sea (?).
The person is necessary for sense of scale but, as you have said just too small in the image. Unfortunately the tracks in the snow do not have a particular pattern to engage the viewer
Just not enough to work with here. Better with some leading lines, some foreground interest, only a bit of sky.