Answer:
1. Launch PowerPoint and open one of your presentations. Click the "Insert" tab on the ribbon, click the "Shapes" button and then click the "5-Point Star" shape to select it.
2. Click anywhere on your slide, hold down your left mouse button and drag it to create a star large enough to cover the object you want to overlay. For example, if you want to overlay a heading, make the star large enough to surround the heading.
3. Right-click the star and select "Format Shape" to open the Format Shape dialog box.
4. Click the "Color" button and then click the color you want to make the star.
5. Drag the "Transparency" slider until the text box next to the slider displays "90%." This value creates a star that is almost transparent but still displays the fill color.
6. Click "Close" to view your star overlay. It will be translucent and display a slight fill color that matches the color you selected.
7. Click inside the star and drag it so that it fits evenly around the object. If the star is too large or too small, click one of the handles along the star's edges and drag the handle to resize the star.
Step-by-step explanation: