A couple of important things to consider when designing or selecting an image to go along with a blog post are:
- Know your theme to be sure you are showing an adequate image.
- If you are not sure about how appealing your photo is include some information in your image, like percentages or data (infographics are always a good tool).
- Finally, take risks. Your readers are going to be more attracted to your post if your image is appealing to them or controversial.