I have over seven years of full-time classroom experience and cannot wait to get to my classroom in Korea. Even with that amount of experience, I will be taking the TEFL course once I get settled in over there. I don't think a teacher can ever know too much! :-)

All good points.  I had a difficult time realizing that class wasn't "all about me"!  In the beginning, I thought it was time for me to put on a show and I found my students laughing and having a good time, but in the end, they weren't getting to talk enough.  

With regard to appearance, I could't agree more.  If you are teaching in a foreign country, please realize that you are a representative (an ambassador of sorts) of your home-country.  I suggest acting the part and looking the part.  Teaching in Korea, I see so many westerners that still think that "grunge" is cool. Perhaps it was indeed cool during university years, however, you are working now.  I wish more people would accept it with more responsibility and not think of it as an extended vacation after university graduation. You are a professional - you should dress the part and act the part.  These "students" look up to you, admire you, emulate you.  Don't set a wrong example.  

No, I didn't forget that part about "not taking it too seriously" either.  By all means, have fun!  But you're an adult and a role-model.  Have fun responsibly - and look presentable while doing so!  

Thank you for sharing, enjoy!