Top panel seems kind of strange to me are those her feet next to her head? If so if you look between the guys legs where he's pounding the woman her legs and look like it should be between his thighs.
I think her head should be where her breasts are, and he should be holding her ankles instead of the tops of her calves. That would fix her arms, legs and lower torso seeming too long (she's not nearly as tall as him in earlier panels). Love the pose, otherwise.
