No offense, but this literally talked about nothing at all. The last half is just some ideas that don't follow a cogent line from one thing to the next.
You should try writing a script about a topic, and sticking to it . Especially if you don't feel comfortable about speaking off-the-cuff facts about what you're delivering. It connotes a lack of understanding and knowledge about a subject.
Ask yourself when speaking about something: if a listener took something away from this speech, what would it be? Then write for that prompt.