how do you handle a know it all student who is a beginner like myself who everytime we pair up critiques every tenkan,hand movement ect. thanks
Ask your Instructor to watch.
New students always do something wrong. Most people, probably still continue to do things wrong..
My sensei will simply tell EVERYONE to stop talking if he sees this too much.
I don't try to critique, unless it's a more advanced student. And I don't take critiques unless it is from someone more experienced than I..
I've spent a whole training hour trying to tell a student that he was grabbing with the wrong hand, I showed him how to do it, it's not a hard thing to do. He just kept saying "Naw man I've got it."
Finally my sensei walked over and said "You're grabbing with the wrong hand."
And then he still continued to knowingly grab with the wrong hand.