Don’t forget to also take care of yourself as part of a good preparation for a presentation. Knowing what you want to say is one thing, but you also need to be in a good shape to be able to say it. Therefore take good care of yourself.
For example having a good night sleep before your presentation may have a more important impact on your presentation compared to working through the night on all kind of other things.
If you are not well rested before a presentation, you may not be able to focus and concentrate that well, which is something that your audience may notice and could have a negative impact on the perceived quality of your presentation.
A good night sleep before your presentation could help a lot.