To be honest, I really don't remember the test very well. Much of it is a blur, kind of like the scenery you'd see if you ride on the bullet train. One thing that I did do, especially during the ikkyo through yonkyo series at the beginning of the test as well as other times when I had my uke in a pin was to take a deep exhalation outward while pinning. With this in mind, I made it a point to use my breathing to slow things down when I could. I'm pretty sure this made a difference physically as well.
Breathing is good.
When I was practicing the kumitachi and kumijo before the test, I made sure to practice slowly and methodically, although I could have very easily have done them all much more intensely and quickly. Whenever I was uchitachi in the kumitachi in the test, for instance, I made it a point to settle for a second before initiating the attack. During the kumitachi and kumijo during the test, I tried to show each movement for what they were and not make it into a meaningless mishmash of flailing sticks. The one thing that worried me as far as techniques went were the koshinage. I realized that I didn't practice any of them for the test as the day approached, so I went and started to use visualization exercises in the days before the test to figure out which koshinage I wanted to demonstrate.