To see them at work, insert a picture into your document, click the image and choose Picture Tools > Format on the Ribbon.
The Picture Styles are formats you can apply to your image and they include some very attractive looking options.
Once you’ve selected a picture style you can adjust things like the Effects which are attached to it.
For example, you can create a picture reflection by selecting the picture and then choose the Picture Effects > Reflection option to create a reflected edge.
You can also recolor the picture border if desired by using the Picture Border option. If you have a picture inserted in a document and formatted the way you like it but determine that you don’t like the picture and want to replace it, choose Picture Tools > Format and click the Change Picture option and choose an alternate picture to use. The format will remain and only the picture itself will change.