[He raises an eyebrow - because seriously, that's the opposite of looking, Katara - but pays it little mind. She's probably concentrating on breaking out of the hold, or something similar.
So he tightens the bind enough that she'll mimic his actions. She won't be able to see it if he just moves her head, so he shifts his right foot about an inch as he turns his body, than his head to look behind him. Katara's body will do the same, and the motions will be fluid. Though if she's strongly resisting, her limbs will feel a little more rigid.
When he's done, she'll be the facing away from him, in the opposite direction. If she opens her eyes, she'll see his shadow there - stretch long across the ground and seemingly attached to nothing.]
[Action]
So he tightens the bind enough that she'll mimic his actions. She won't be able to see it if he just moves her head, so he shifts his right foot about an inch as he turns his body, than his head to look behind him. Katara's body will do the same, and the motions will be fluid. Though if she's strongly resisting, her limbs will feel a little more rigid.
When he's done, she'll be the facing away from him, in the opposite direction. If she opens her eyes, she'll see his shadow there - stretch long across the ground and seemingly attached to nothing.]