Might only be a snapshot, but it's a beauty. A moment captured. The full size version made me think that quite a tight crop around the head a neck puts even more attention onto that angelic face.
Very interesting shot, I like it. My only comment is that: it might be better to use a bigger aperture to make the background more blurred, and the main subject would appear more focused.
Thank you all for your responses. I'll experiment with the cropping ideas (this version is as I saw it through the viewfinder). The aperture is as wide as the 55-250 goes, so there's not much that I can do about that one! It's a good suggestion though.