Suspense is the arousal and sustaining of curiosity as long as possible. Raise a question and don't answer it immediately. Set up a description of a conflict but hold off to later saying how it was resolved. Converting a sentence to a question can arouse curiosity. Tension is created in those delicious moments of anxious uncertainty.
Readers love it.
Here's an example of a simple police traffic story. The suspect didn't move. Simple paragraphing and breaking the sentence into two creates a moment of tension. The suspect shook his head and stayed put. I won't keep you in suspense any longer.