I figured the other bloggers would do a great job of sharing their techniques regarding "telling details," so I thought I'd focus on just one aspect--creating a sense of place using the five senses to show telling details, plus a couple more tips.
1. Sight: Include three things you see in the scene that are unique to your character's viewpoint. For example, if you're describing a school classroom, you might mention the clock (waiting for school to get out), the waste basket (where the teacher threw your homework), and the graffiti on your desk (a picture of the teacher lying dead on the floor.)
2. Sound: Include 2 things you hear, besides voices, such as a baby crying in the distance, a creak in the old fence gate, a buzzing bee hovering around your head, or coins in someone's pocket.
4. Taste: Include something you taste, but not necessarily something you're eating, such as the morning's toothpaste, a mint you just popped in your mouth, peanut butter from today's lunch, or the memory of a kiss.6. Plus: Include an internal reaction to the setting, such as a gut reaction, raised goosebumps, shaking hands, a sweaty brow, or a cold shiver.
8. Plus: Include the weather, such as dark and stormy night, windy day, cloudy morning, flash flood warning, or smoggy summer.
9. Finally: Include the overall mood, such as creepy, foreboding, serene, excitement, or black.