Sprite Stitch Board!

I found this awesome Vocaloid pic, and i *tried* to make a nice pattern, but..i dunno. Guess I'm not good enough yet xD
I followed one of the tutorials on here, and reduced the colours, and now I guess it only needs a bit of tidying up...but everytime I try, I end up messing it up :x
So I'm asking anyone to help out plz orrrr....if you guys think its fine, then nevermind ^^
I did it for a 22ct, cos thats all I have atm.

What level of detail/rough colour count are you after? Especially for things like the little marks on the faces and the music tag at the bottom?

sry, i think 25-30 max colours, and yea i'd like the icon in the corner, not too fussed about the cheek marks :3