Not bad, I like the concept, but I have some things to complain about:
The top of the hair on the upper left side has some white parts beyond the outline which shouldn't be there. Also
at the left the vector of her beginning chest stops before the border of the wallpaper which leads to a black line.
In general the colours could have been chosen better. They don't look right - especially the colour of her hair
(too much saturation) and her skin colour (too much green in there).
Ah, all right, I will shut up now ...
Btw, her name is Kirika Yuumura ...
