There are a few tasks you can complete with your Issue Images:
You can change the order which your images will appear on your final report by clicking and dragging an image to your preferred location.
Images can be deleted by clicking on the trash icon in the bottom right of each image preview. You will be prompted to confirm this action before the image is removed permanently.
Clicking on the pencil icon will take you to the Annotations page, more information on Annotation options can be found here: How Do I Add Or Remove Annotations To An Image?