In preparing for court testimony in a DWI case, what are the key elements a police officer should focus on to ensure their testimony is credible and effective?

How does the officer balance providing accurate details of the arrest process while also effectively communicating complex technical aspects, such as field sobriety tests and blood alcohol concentration analysis, to a judge or jury?

Additionally, how can officers anticipate and address potential challenges or cross-examination approaches from defense attorneys during their testimony?

references:

https://www.youtube.com/watch?v=y75rbpK7gWY

https://www.youtube.com/watch?v=0P5a3Q8AjMs

https://www.nyc.gov/site/nypd/services/victim-services/criminal-justice-process.page

https://www.youtube.com/watch?v=gjIiwykAwhA