I think this could have been better if she was sitting more upright. You could have included her arm and moved her more to the right. The attention grabbers are her eyes, black dress, stockings and boots, not so much her torso. 7
This would have been great on a neutral background like cement or wood planks, the model and clothing are eye-catching but the green grass distracts from the mood.
Great outfit and the perspective you chose really helps her head dominate the shot. Possibly a little sharper focus on her face could be had, but I'm ok with it.