A rhetorical question...

Is it a good thing, a bad thing, or simply an interesting observation, that I find myself a little nervous in the minutes before I head downstairs to administer the first college exam I've written myself, covering material for which I've been the only teacher?

I know where the nerves are coming from, really: I want to challenge my students, but I want them to do (moderately) well. I want to get them thinking, not scare them out of their wits. Achieving that balance will be an interesting exercise, to be honed over coming years, I'm sure.