What are some tips for great speech?

to give a great speech requires a lot of practice and mastery on the topic of the speech,

eye contact with the audience is a great way to show them their importance and your skill on the topic,

walking on a normal pace on the set 

not looking to the powerpoint or screen

increase and decrease the tune and volume of your voice to gain the interest of the audience and avoid boredom during the speech

Pause while talking is another way to gain the lost interest 

questioning and make the audience participate in the speech is a way of a good speech

icebreakers are tricky and based on various audiences it can be even dangerous, hence, be careful with your jokes