Hey, I like this. The hair's nicely rendered, and I like the desaturated palette.
I think my main CC would be to watch your colors. It seems like you could consolidate your colors without losing quality (the skin and dark eye pupil colors are pretty close, for example). I might have also done some shading to make the eye not look like a flat dark plane, but that also could help them pop out a bit, so that's a bit up to you.
Anyway, nice work.
Oh, how cute! I like all the detail you got to include, though it's so small!