PowerPoint can do Photoshop-like tricks. One of them: cutting shapes out of images. Here is how to do it:
- Drag your image on the slide
- Draw a shape on top of it (the freehand shape allows you to create a very precise shape)
- First select the image, then select the shape (shift click)
- Now select the Shape Format menu
- Click Merge Shapes
- Click Subtract
That’s it. Below is a slide from the template store that uses this technique (you can download the ready-made slide if you want)

The final template slide

The making of
Photo by Joanna Kosinska on Unsplash