Screenshots are a great example of showing instead of telling, but there are several other types of images you can use to get your message across. And using the Snagit Editor is a great way to enhance your and work with all of these types of images.
Copyblogger has a great article on 8 types of images to Increase the Psychological Impact of Content.
The types are:
- Stock photos
- Charts and graphs
- Personal photos
- Still frames from TV shows or movies
- Custom art
Check out the article here: http://www.copyblogger.com/powerful-images/