In the Insert command tab, the Shapes group contains several categories of shapes, including lines, basic shapes, block arrows, flowchart elements, stars and banners, and callouts. To draw your own shapes you can use the freehand drawing tools, Curve, Freeform and Scribble. Curve lets you draw shapes with curves, Freeform lets you draw shapes with both curves and angles, and Scribble lets you draw shapes and lines freehand. You can also combine these tools with other preset shapes (see Editing Images for instructions on grouping objects). Rather than going through the hassle of layering text boxes on top of shapes, you can add text directly to a shape so that it moves, rotates, shrinks and expands when you format the object. Drawings in PowerPoint can be formatted just like any other object - you can move them, use the handles to resize and rotate (see the instructions for resizing and formatting text boxes). With custom shapes you have the additional ability to edit anchor points, the key to making sure your drawing is just the way you want. You can also change the color and outline of a shape, or add 3D effects. You can reach these options either by double-clicking the shape and using the Drawing Tools tab or by using the more condensed Drawing group in the Home tab. The Shape Styles group on the Drawing Tools tab provides the tools to customize your shape. Choose a preset style from the Style Gallery, or create your own by using the Shape Fill and Shape Outline menus to pick the color of your shape and border and the Shape Effects menu to add shadow, bevel, and other 3D effects The Drawing group on the Home tab has all the options of the Shape Styles group as well as the Shape gallery and the Arrange menu. To access the Shape Style gallery click on the Quick Styles button. Source.