You will be fine. I had a preceptor who was a nurse for 25 years and exceptionally good at IV starts...in short, it took me 2 years to get proficient at IV starts. I shook like a leaf for months after...
I took it at the end of December. I studied on and off for 3 months, more heavily the last 2 weeks before the test. I passed but just barely. It was 175 questions. The questions aren't tricky like...