I think one good thing that hasnt already been mentioned is see if you can come up with a theme, something that will help you stick out and help them remember you. Our essay and presentation both centered around how we created THUNDER in our community, school, etc... We used descriptions of thunder, and had a large thundercrack at the beginning of our presentation. Our students also wore camo pants, dress shirts, jackets and camo ties, so they stood out and hopefully created something memorable. It was fun too
Another great way to really make it a great chairmans submission, is to get input from EVERYONE. We get input from our parents, our students, mentors and even our janitors! Every student had some small piece of the essay in some form or other, and it really felt like a team essay.
But the point about selling your team is true, if you have students that are really passionate about your team and are good speakers, put them in front of the judges. AND PRACTICE... I think our team went over their presentation at least 40 times. The last 10 were working in how to not sound scripted

Dont look at anywhere you think you came up short, look at your strengths and how you stand out, and SELL it!!
Dont forget to HAVE FUN!
