I really like the contrasting colors here and the choice of red for the subject's skin tone fits the theme well.

The fact that the model is facing away from the camera with their face obscured gives it an almost voyeuristic feel. I think you hit the level of detail just right to make this erotic rather than pornographic.

Did you draw the lines freehand?

As a practical matter, I appreciate you making a pre-cropped version so that it's easy to find a middle ground between NSFW and an uncensored pic in the feed preview.