I guess it could be ironic that there is someone else's shadow on the wall, but that's more a techinque, besides the shadow mimics the kid enough to be his shadow. Needs something else, maybe the shadow doing something else. Sorry if I didn't get what you were trying to say.
Not sure I get the irony of the shot. The baby is adorable but the eyes colorized like that are quite frankly, a bit frightening. A little out of focus and the baby is too bright, you have to almost shield your eyes to see the shadow in the background.