Among the various shape effects available within PowerPoint 2013, probably the most subtle one is the Soft Edges effect. This effect adds an eaten-up, feathered edge to a selected shape. Soft Edges work best with larger shapes, especially if you use some of the larger Soft Edge variations available. PowerPoint provides some ready-to-use Soft Edges.
Learn how to apply Soft Edge effects to shapes in PowerPoint 2013 for Windows.

