There are many templates available online to help make your presentation more visually appealing and to organize your information.
Slides Carnival offers free, easy-to-access templates for presentations, without having to make an account or register. You can even search by color or theme if you have general idea in mind.
Slidesgo includes free and paid templates, for PowerPoint and Google Slides.
This guide from Ohio Wesleyan University provides information about how to find images and use them in your presentation, and how to cite them properly.
General tips for including photos and images in your presentation:
Remember that photos and images should add value to your presentation, and not be a distraction from your message or a replacement for quality text.
Canva is a online platform that allows you to create graphics for print or digital use, marketing materials, documents, infographics, and more. Canva offers a free membership that includes many templates and design options. Canva also has a wide variety of editable PowerPoint and Google Slides templates. Create an account and save your work to edit from any browser.
Piktochart is an online tool that can help you create infographics and other diagrams to use in a PowerPoint, on a poster, or in print.
Bubbl.us helps you create concept maps and mind maps that you can add to your presentation or poster.