All right... let's see... I have no idea what to answer, but I have to say something, the young Ravenclaw thought. 'Well... the wand movement... eh... I think you just have to point the wand to your face and make some kind of counter-clockwise movement.', Gwen said, looking totally confused. How come I don't know much about it? Hmm?!?! I have to know!

And now, the incantation... 'I don't know the incantation is...', she admitted looking down. I feel stupid!