“Don’t tell me the moon is shining; show me the glint of light on broken glass.”—Anton Chekhov
Descriptions make or break writing. There’s nothing worse than reading a book, and being pulled out of the story by a bland description that seems more passive than active.
One word of advice that I’ve seen multiple times, and have experienced both as a reader and as a writer: the best writing is not about action or character development; it’s about how you are able to make music sing from the words that you write.
Don’t tell me that the violinist played a superb piece; show me how she made the audience cry and find goosebumps on their arms listening to her play.