Best way to go is practice in the mirror. It helps alot also a good tip is record your whole speech on your computer or phone then listen to it. It'll help alot in determining if your speaking to fast to slow where you think you should pause etc. Another is i always have a glass or bottle of water. Not because Im thirsty but because it allows you to pause for a second rethink your thoughts while you take a drink and then continue its a nice pause to rethink about what to talk about next

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