Beautiful shot, love the depth of field but personally I would remove the slight bit of ground at the bottom of the photo, maybe move the swan to right slightly as well to add more of a rule of thirds but overall I think it's a great photo!
I have to use up 100 words so maybe play with the lighting and contrast, maybe try something abstract too. I always edit an image multiple times to see what I can come up with! You're luck you managed to get such a good photo of a swan! The best I have done it a Robin!