PowerPoint slides are the visual aid to your presentation, not the presentation itself. Make them clear and interesting.
Further slide tips:
You can make your excel charts more attractive by removing chart "junk". Here's how:
You can find more slide tips from Garr Reynolds
Paletton is a great tool for choosing a color scheme and testing out a scheme for different gradients of vision.
Another great resource for public health images besides Google Images is the Public Health Image Library.
Just remember your ABC's-- be Audible, be Brief, and Connect with your audience.
Remember to add a citation within your slideshow wherever you use non-original material and include a bibliography at the end of the slideshow. To minimize the space used by citations on a slide, you can use the shortened or in-text version of the citation on the slide then the full citation at the end of the presentation.
Option 1: Placing the shortened citations within the text of the slide
Option 2: Placing the shortened citation at the bottom of the slide