Her face, for the most part dress, hair (minus the part), upper arms, even color choice are all well done. However I personally think you should revise the lower arms, hands, and feet as theyre quite out of proportion. Following that her right breast cup for her dress is slightly larger than her left. Lastly her part in her hair is in a rather awkward position. I strongly suggest you take this to the forums, there are a lot of amazing people there who could help you out with tips or tricks! Or try and do a comparison to your Peridot piece which is very well done in my opinion.
Thank you so much for all these suggestions! It probably looks so weird because back then I didn't use any kind of template at all ^^' But I will totally consider to redraw it and/or fixing it up!