If you want to show your images in an appealing design, you can mask them to fit into a certain shape.
- On the Insert tab, click Pictures. In the dialog box that opens, find the picture that you want to insert, select it and then click Insert.
- Once the image appears on your slide, click it and select the Format picture tab.
- Click on the Crop option and go to Crop to shape.
- The selected shape will mask your image. To adjust your shape, click and drag the colored handles.