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:
Paletton is a great tool for choosing a color scheme and testing out a scheme for different gradients of vision.
If a picture is the focal point of your visual design, you can use an image color picker such as imagecolorpicker.com or colorcodepicker.com to discover the code for the matching color in your image.
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.
Examples:
Option 1: Placing the shortened citations within the text of the slide
Option 2: Placing the shortened citation at the bottom of the slide
Reference List