Poison Ivy and Harley (NSFW) black and white

I find your composition engaging, although not unique, but I understand the context of the image puts certain constraints on presentation.

I feel greater emotion could be conveyed through a more detailed reproduction of their faces. This intimate scene has a good sense of movement tho with the lines of the vines down Poison Ivy's arms drawing attention from the fixing gaze of the women to the right of the frame.

Your line work looks choppy with the short strokes on contours like Quinn's chest. It breaks flow. Single flowing lines would add softness to the forms, and varying line weight would help push the depth of the scene. Thinner, and even broken implied lines in the back, with heavier lines in the foreground could solidify the illusion of plastic space.

Your hatching works well where you use it, and I feel you could have used more in addition to further fine line work in places like their hair to bring a greater layer of interest.

All in all your composition is interesting to view, but could have been stronger with a little more attention to details of the scene.