she has no self assurance

This is possibly the most incredible piece of art I have ever seen. The detail is incredible, I mean the vision to create something like this is hard to wrap your head around. The colors vary so strongly, and the contrast adds to the meaning. The attention to line detail, like varying thickness is great. The piece works great in the space, her posture is exactly right, the way her arms cross is self-protective, and the proportions are perfect, she is nearly perfect.
However, the nose looks somewhat off. Also the shading is too idealistic, I think you could have done more with it, especially the shading in the center of the face around the nose. The hairline at the top is blurry, and i think the hair could go better with the picture, like if it had some lines detailing part of it.
Overall, it is still beautiful and you should never stop doing this.