You have three options: write out a full script, write out a structure, or go unscripted.
With a script, it’s sometimes difficult to translate written words into a talk. You also don’t want to sound too rehearsed, so if you go with a script, you need to fully master your memory of the talk so that you can add your character back in.
Whereas scripts can make every word count, unscripted talks can be half-baked and rambling if they don’t have sufficient preparation. With unscripted talks, it can be helpful to have transition steps or a clear map of the journey that you can follow.
