Examples of how to introduce yourself while doing an unprepared speech

1. "Hello everyone, my name is [Your Name] and I am here to talk to you today about..."

2. "Good afternoon, I'm [Your Name] and I will be discussing..."
3. "Hi, I'm [Your Name] and I'm excited to share with you..."
4. "Greetings, my name is [Your Name] and I'm going to talk about..."
5. "Hey there, I'm [Your Name] and I'm here to present..."