Patient assessment test for fire department

Hi! I am applying to the fire department again for single role EMT, this is my second attempt. There is a medical and trauma patient assessment test. I did really well last time but unfortunately I got so nervous right at the end I messed up over something little. Does anyone have any tips on how to pass or calm nerves? Any advice on being a single role emt in the fire department? I have a little previous experience on living in a firehouse, from an internship but any advice would be appreciated. If I get in I want to be as helpful and respectful as possible.