Just happened to look at this. There might be possibilities for improvement this way, somehow he managed his shading to give fluidity to those thick outlines.
Also, dithering has nothing to do in this style you're aiming for; and why not give her a real Japanese makeup?
nicee,maybe you could make a base of it,i like this style :]
I like it, but as tioluko suggested, I think some AA would help.
Snyggt, men (som TioLuko sa) skulle du kunna jobba lite med AA på dina svarta linjer. Lite väl många färger för en sån här bild, men det är väl ett resultat av att du använder Photshop? Du har inte funderat på att använda ett program bättre anpassat för just "pixelgrafik"? Där får du också ofta en bättre kontroll på paletten. (GrafX2 t.ex.)
This is good, I like it!
Maybe the hair could improve, the 2 lower strands look weird and are probably unnecessary, and reflections are too patchy.
I'm not sure about shading, maybe it could use another dark tone as in your former pieces, and it's not realistic to have it mirrored.
Ah, banding is under control! 
I like this style^^
Nice colors :)
But i think you should use some "Anti Aliasing" in the lines to look more smooth
Nice job ^^
See ya
Nice and interesting character. The mirrored toning spoils the pic a little, but I like the cool hairstyle she's sporting.