I really like this book cover. If I saw it in a bookstore, I would pick it up to check it out. The anatomy of the skeleton looks really good and the extra dotting gives the bones that porous, gritty feel. I also love the roses and how simple they are in comparison to the bones. That helps to connect the roses with the soft texture of the girl's face. Lastly, I love that you used the black hair as a sort of negative element, which helps connect both the rough skeletal structure with the soft, graphic-like roses and face of the girl.
Was this image wider? I ask because I see the left hand is holding a heart but it's cut off by the edge of the cover. I wish I could have seen that part of the image. The other two parts that seem odd to me would be her lower left rib (beneath her left hand). It doesn't seem to match up with the right hand side and looks like it's just by itself and the two to three ribs above it are just gone. The other part is her right hand (holding the rose). It looks like she's missing her metacarpal bones or, if they are there, they are drawn too small for the rest of the arm/body. Lastly, the cloth off her arm and the two rose pedals that are floating down behind the back cover text are still a little too bold. At a glance, the text seems to get lost in the image.
The ankh on the book spine is the only bit of gold on the cover and I wish it would have been black or similar to the skeleton. I don't know. Just something similar to the rest of the book art. Maybe a bit more stylized like the "A" in "Dead Girl."
Overall, a great book cover. I think anyone walking past this book on the bookshelf will find themselves picking it up. Very well done!