I'm probably going to edit this a bit more but it's pretty much done.... I truly regret not using color at first, overlay painting in ArtRage isn't what I hoped for, therefore I did my best with grayscale values.
Any comments or critiques are more than welcome.
Also, please check out my other Vocaloid related projects:
My trilingual Vocaloid Fansubs (ENG+SPA+FR+Romaji): www.youtube.com/user/FiRezfps
Vocaloid subreddit (An active vocaloid community with +4.5K members, I'm in charge of its moderation and design) : www.reddit.com/r/Vocaloid/
I really like the hair, the " android " part we can see on her, the clothes and ribbon look perfect too.
The only thing that bothers me is the face : it looks a little too big to me. If you except that, the facial expression itself is really nice.