I need a 21 slide presentation (with the last slide being a reference page) made

I need a 21 slide presentation (with the last slide being a reference page) made

I need a 21 slide presentation (with the last slide being a reference page) made in powerpoint made then I can add voiceovers. As well as a 20 second script for each slide. The outline I made will be attached in the files as well as an example of what my presentation should sound like.