Everyone I've showed this render thought it's a photo, not a render (back side render you did earlier).
Even my brother who does 3D modelling and animation for a living. That's gotta mean something
It just doesn't look perfect though in my opinion, a few things just look too sharp but its still a master piece.
I think its the chrome nostril things on the front they look a bit off in my opinion, too squared perhaps or edgy but you're probably happy with the result so no need to change it.