"Empty" images
When looking for images for your presentation (SlideMagic has a great built-in image search engine), consider searching for images that are relatively “empty”, i.e., images with a lot of white space. This allows you to set them as the background for your entire slide. See the example below.
Pick your keywords to find these type of layouts: empty, background, wallpaper, sky, cliff, horizon, etc. etc.
Photo by Zoltan Fekeshazy on Unsplash