That's purrrrrfect! Ha!
I wouldn't have noticed the nose being too long if you hadn't said. Maybe it is by a mm, but I wouldn't worry personally. I bet you the client will love it. How long did this take you?
Edit: not sure if his chin looks a fraction too fat? I think if you shade the lower hairs a touch more it'll look better. But what do I know about painting? Lol