I really like the contrasts in this image. The colors used are usually associated with happiness, warmth, and such. But her face is so melancholy. Like she is pondering something very important. 'u' I do not know if this is intentional or not, but I enjoy it. I also like the stylization of the hair and other aspects of the image The technique used on the hair gives it a very cotton candy-like feeling. Very fluffy and light, which works well with the colors used.
I would check the anatomy on the portrait, as some aspects seem a bit off. The eye feels to high up? or maybe the nose is a little too down. But I'm not sure if this was a style choice or not. The neck also feels a wee bit thick. ouo