Absolutely gorgeous wee dog...well wee just now :)
Photo would have more impact for me if you got a little closer and captured mainly head and shoulders with just a little greenery ..concentrating on between the eyes for dead centre. However, there`s no saying how that would go down with the "dead centre brigade".
It'd be nice if the dog's face was really in focus. Maybe just add some sharpening to it? It looks soft. Also maybe try cropping so that the head is dead centered, to help with this particular challenge.
Cute dog, but appears to me as more of a snapshot of a pet with no real composition in mind. I think I would enjoy it more with a sharper focus and cleaner greens.