This is a really cute photo and I love the contrast between the background, the orange vest and the skin tones.
I can't quite tell if it's slightly underexposed, something tells me it is; but I may be wrong! There's something that just seems to be lacking. I do however like the depth of field, it seperates the subject from the background very well.
Overall it seems like more of a snapshot that would be brilliant in the family photo album than a 'piece of photography', but as I said at the beginning, this really is a very cute photo.
Tim