I just saw your picture on your deviantart site. I totally dig that labret, thats hot. A chick that likes Opeth, is an artist, and looks good to, they dont make em like that in Ohio, haha. Allright Im gonna stop with the flattery, your going to get a big head, lol.
I still think the shading is fine on the right side of the chin, lol. All the dark shading is on the left side of his facial features because the light source is coming from the right. Shading both sides of the chin would throw it off and make it look less realistic, its shaded the way the refernce picture shows it should be. The blurriness is probably because this is a scanned picture made out of pencil. Im sure it looks sharper in person.
I meant HIS right, of course. And I think that you could break up the dullness of that area by deepening the darkest shades there, without comprimising the direction of light or realism. I guess it all comes down to wheather you're drawing a picture of Peter or a picture of the picture.
I'm on DeviantArt as well - I'm gonna add you as a friend, if that's ok.