First Day of School Jitters

So tomorrow is my first day at my "teaching school". We go for three days of observation this week before returning in November for 7 weeks of actual teaching practice. But tomorrow I will be meeting my cooperating teacher and all of his classes and students. Very scary. I'm even nervous about what to wear! It's like the nerves of all the first day of schools from your childhood, but without the comfort of knowing you'll know people there. There will not be a single familiar face in those classrooms tomorrow. Pretty daunting. Fortunately, I think I basically get to just sit there and watch, but I know the kids will be watching me as well, sizing me up for when I'll be trying to edumacate them. Here's hoping I give off a decent first impression!