The interview is not formal
go in looking good clean cut shave, hair cut, clean clothes, and looking respectable and thats good enough
I went to mine in new jeans new shoes and a nice shirt nothing special and did fine.
The real points are how you answer your questions know your trade know why you want in
know both or all 3 of your trades you picked not just your first and you'll sail through
oh and think.. don't be worried to take a few mins to think of your answer.
Some of those questions could easily be answered stupidly if you don't.
I had a great time in my interview though he had some good stories for me.
Best of luck
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