As a British person, this immediately made me cringe to read. Maybe I'm just used to a certain degree of bumbling British humility when talking about myself?
Some of your points are good, some of them, having been on interview panels myself, were not so good. Being familiar with your application is a must, but printing it out to refer to like a contract in the middle of the interview? It's much better to portray an accurate view of yourself and how you would react to challenges than to nitpick wording of questions. If you can't even remember why you chose the three placements you did and what they were called, then you probably don't belong in JET. I'd severely question the capabilities of anyone who sat in front of me clutching a print out of their application form and referring to it in response to a placement query.
I'm also pretty sure you missed the point of Gizmotech's question which was 'how would you cope' not 'how would you fix it'. Also your discipline and rewards speech would have me completely lost if English wasn't my native language, and still kind of did to be perfectly honest. You talked around the question and gave a non-answer in the end. You could have answered that question much more efficiently in my opinion, especially given that at least one person on your panel will be Japanese-speaking.
Your response to Page is also just reiterating what Page said.
Not to say that you're not what JET is looking for, hey, what do I know, I'm only an applicant too. But giving advice like this, when you haven't sat the interview yourself, is spreading a certain degree of misinformation and generally just broadcasting your own opinion and answers to a lot of people rather than being genuinely helpful. All I saw here was a lot of 'look at me!' and all the useful bits of advice were actually just general generic things that are repeated in nearly every interview guide out there.