Common sense #1.
Look for images with feelings.
A quick way to know. How does your story make you feel?
The image your searching will answer that question.
Common sense #2.
People connect with extraordinary.
Ordinary defeat the purpose.
A quick way to start. Avoid familiarity. Make your image the least recognizable image. In the community, you’re writing for.
Common sense #3.
Know cool places to find those images.
Here are two top favorites of mine.