Image manipulation was done either in Photoshop or within PowerPoint’s arsenal of effects. Both are quite similar, Photoshop allowing a bit more control. Animation may or may not work automatically depending on your operating system, usually 2 seconds per slide; it has been programmed as such but PowerPoint online is limited in its functionality.
Same instructions for playback if you have issues with the file below: In order to see the automatic animation, you may have to click the full-screen button on the lower right side of the navigation bar. This will bring up a new window with PowerPoint Online. Click on the Start Slide show option.