When describing character - show don't tell. E.g his heart was thumping and a cold sweat broke out on his forehead. He knew it was time.
Describing setting - use adjectives to help us visualise the place. The creeking gate made the old house seem even more spooky. It's broken windows, covered in dusty spiders webs meant no one had been here in a long time!
Use this to write an introduction paragraph for one of the following images