It's easy to upload your own images to your collections. To do this:
- Open your collection in edit mode
- Click the '+' button
- Click the 'Image' button (it looks like a camera)
- You can click 'Upload an Image' to grab an image from your computer, or 'Choose an Image' to pick from the free stock image library Unsplash.
And that's it! See this video for where to find the button: