You have not set up your Feature posts so I can not find any images.
- Create a specific category such as "feature 1" to use for your feature posts.
- Add a new post using the created category and insert the featured image.
- Tip: Images can be linked to the post, image file, or a custom link.
- Repeat for new images.
- Select the category from the drop down when you set up the widget
- Tip: Make sure the images are exactly the same width and height.
- Tip: Ideal image width is 840px.