Why does the nose get flat in the middle? You have to add shading on the side of the nose,.
or at least make the highlight, which goes over the whole nose, more visible though.
Other than that, It looks quite nice, keep it going.
your brain gets with ez the feeling that it's a nose... this is, the nose isn't all shaded, even in real life you can't see all of the reflection, your brain just knows it's there according to it's oposing shadow ( which I will add )
a plain white seam there or even a stripe would look odd, thanks for pointing that out tho. :>