How do I write an outline for a speech?

how do I write an outline for a speech?

Break it down into 3 sections
1- the intro- list your greetings and then dive right into it give an over view of the paper
2-The 'meat'- once again break this into 3 sections
a) 1st point (list supporting details)
b) 2nd point (list supporting details)
c) 3d point (list supporting details)
3- End it thank the audience and smile