My First Butterfly Gymkhana

Today is going to be my first attempt at gymkhana and I have some serious butterflies.

I don't know what to expect as far as tacking up and warming up when there's an event.  How will Geronimo react to having so many horses and people crowded around.  He takes a long time to warm up, and how will I keep him warmed up?  Will I suddenly forget how to saddle him when there are so many experienced people around?

I know it's going to be fine.  I'll figure it out and people will help me if I need it.  Still, it's a butterfly circus in my belly.