This is lovely; I like how you have used the roses both as part of the girl herself and as a background. They fit nicely with the pearls and give a sense of the picture's atmosphere. The hair is well-drawn as are the lips. I would suggest studying further to improve the eyes and the hollow in the neck. Overall this is a lovely piece and I'm glad I found it!!
I love the detail of the different strands of hair, it looks really elegant and really, just frames the whole face and portrait the transparency of the cloth makes it super graceful and godesslike which is really unique in this sense.
The small and sharply identified nose adds to the effect even more! I LOVE it!!! keep going!