[Improve] How to do a talk

[Mte90]

• Organize the hard stuff for the end
• Organize a talk where missing slides creates no huge problem
• Ask for feedbacks at the end of the talk
• https://docs.google.com/document/d/1PAAwLL5QjI9mkfK5YH6Hlp690JsJVLtbDaUcxXJJ4Dw/edit