Three Minute Clinic! HELP!!!

[Back In The Saddle]

After having not umpired any diamond sports for 20 years, I find myself pressed back into service at the last minute. I'll be umpiring a women's slow-pitch church tournament tonight. ASA rules, but pretty laid back . Not sure if it'll be one man mechanics or two (depends on whether the "scheduler" can find a second umpire).

Question 1: Should I wait until game time to panic, or should I begin panicking now as part of my pre-game?

Question 2: Can you give me a mini clinic to get me up-to-speed enough to survive tonight, and maybe even do a good job?

Thank you!