Wow, was my first thought. Very nice atmosphere and great wisps of mist indeed.
When I look closer, I would make some changes. The grass is very light, almost illuminated, toning it down to a more dead color would do it good. I would flatten the ice more, or if it's a lake with ice chunks, I would make a less even distribution, perhaps more near the edges. But I think it would look good with quite flat ice, some irregular white 'less transparent' ice, and CRACKS. Maybe a few chunks of ice raised above the average sheet. Or make it all ice except for a warped voronoi hole in the middle.
That is; if you need my opinion...