When it comes to desinging a presentation, the key is consistency. Coming up with a design that reflects your message matters, but not more than consistency. Keeping a look throughout your presentation brings the visual components together. You don’t want to be haphazard, chaotic, or all-over-the-place. You want to be authentic and predictable. 

The examples you find on these pages represent different views of design but contain one glaring theme, consistency.