The teeth need to be recessed?

Ears look to be uneven; left ear is too outward compared to the right ear. 

Not enough shadow clone jutsu.

@ARikozuM

- True, the teeth should be recessed, I haven't even thought about that. Thx.

- The ears should be even, its just mirrored.

- Will get there with time

I haven't watched a lot of the show (liar!), but I think the grin is usually angled to one side and the three "whiskers" are tighter. 

@ARikozuM

I tried to sculpt based on this reference picture.

The hair gave me a lot of trouble as you can see, I need to find a better way to do it. I also struggle with some brushes and don't know which settings to use on them in what situations.

And the grin is not angled because its mirrored as well, except the lines in the middle.

Objects are easy to make, the characters are a lot more difficult