A great speech is not just about the delivery. A great speech makes your audience feel something and then if it's really good; do something.
What's most important though, is that it sounds like you. There's no use delivering a speech that isn't authentic to who you are and what you value. And if you just try reading written copy, you'll sound like a robot.
I've written speeches and scripts for politicians, business owners, conference keynote speakers, award presenters, and a Best Man. I've even written eulogies. Each speech is crafted to reflect the topic, the audience and most importantly, the speaker.
I'm a trained SEO copywriter and writing speeches and scripts is my favourite thing to do.