I actually agree that she looks more like Yoona than Jessica!
About the thing with the headbanging, she doesn't even do it in the PV. People get upset over the most stupid things, ever. (Sooyoung doesn't do well either, but I think thats mainly because she's gonna sing in a second)
Hyoyeon, Yuri, Yoona are the only ones who really do it.
(Someone needs to close Taeyeons & sooyoungs mouths
)
Oneee more time
