After inserting pictures within your PowerPoint slide, you may want to change the appearance of the picture. Picture Styles are based on PowerPoint’s Picture Effects capabilities and add some effects with a click. Most of the time, this means that a single Picture Style adds a reflection, a glow, and a border to your picture. However, you can also apply any of these effects individually to your pictures. In all, PowerPoint provides 6 effects: shadow, reflection, glow, soft edges, bevel, and 3-D rotation.