Nice work! I love the little burst of colour in her eyes and your choice of value.
Did you reference a photo for this?
I think the only thing that doesn't work for me is the flatness of the right side where her hair connects to her arm. It seems to flatten her out a bit too much, making her look squashed slightly or look like she's leaning against a non-existent wall.
Overall, still an awesome piece! This would make a nice print.