Show Yourself

'Show, don't tell' is a pretty well-worn piece of writing advice. Likely because it's good advice. However, I don't generally see this elaborated upon. So here's my quick guide to showing:
Think sensory. Describing smells, tastes, sounds, sights, and tactile sensations bring the reader 'into the moment' in the story and relay experience rather than sumarising facts.Use body language. Let characters demonstrate their emotional responses by actions that are unique to them. It's much more compelling to describe a character pulling and fidgeting with her hair than to simply state 'she was nervous'.  This has the bonus of giving characterisation at the same time. Actions speak louder. It's infinitely better to let the reader follow the character as they do daring deeds or puzzle out clever solutions to problems, rather than telling us that the character is 'brave' or 'smart' and expecting the reader to believe this with no supporting evidence.