Uhm... This is my first critique so please bear with me. I will try to do the best I can. First of all, the style is great, the textures, so are the colors used. The shading's amazing and the blending of colors. I don't really know VOCALOID but I can tell that this is very well made. But, I think you missed to color the spot over her left hand, the parasol's handle. The pointer finger of her right hand kinda got very pointy(?). But, fortunately, the amazing coloring style can slightly cover up those points. In summary, this artwork is good and keep up the good work. Just don't miss coloring little parts the next time. I hope this helped.