Diana, I absolutely love this shot and it was one of my favs when I went through this FS... I'd like to make a suggestion, check out this shot from Richard (Yanko).
Richard also posted the original, so you can see what he did, he took a nice shot of two fawns and turned it into a ribbon winner with some skillful post processing. Your shot reminds me so much of his original for that challenge, I think with some similiar post processing yours could easily be on the front page.
I really like this image of the horse with the steam from his breath in the cold morning air. I also like the way he is illuminated by the light from behind. 7