I believe practice and experience make a public speaker effective. For example, people usually gain confidence through their experiences in speaking. As they practice and experience, they are more comfortable in their speaking, so the audience can hear the speaker better and easy to understand. As they go over their speeches, they will find some mistakes, such as improper vocabulary for a speech.
I attended an enrichment which was held on Thursday, Sep. 17. It was about declaring minor, academic advisement, … information for freshmen to know. I received a letter that this enrichment was mandatory, but it wasn’t. It only took like 10~15 minutes. I am just happy to get the signiture on my planner.