Once you add your pictures to a slide, you can correct the images, add picture styles, and fine-tune them in a number of ways. You can use the image editing tools provided by PowerPoint 2013 to really make your pictures shine. By applying artistic effects, you can make your images look like paintings, drawings, pen-and-ink etchings, and more. By using the built-in corrections, you can adjust the light balance, sharpen the image, and correct the color tone.
Select the picture to which you want to add the picture style.
The Picture Tools Format contextual tab becomes available.
Click the Picture Tools Format tab.
In the Picture Styles group, click the More arrow to display the full gallery of styles. ...