“When you’re telling a story, they say that “God is in the details.” In other words, the more details you feed your reader, the easier it is for that reader to enter your fictive universe and become engrossed in your universe.
Too often, writers throw out abstract details and expect the reader to fill in the blanks. You might say something like, “A bird flew overhead.” Well, there are all kinds of birds, all kinds of habitats. A green parrot that flies over your head, squawking as it does so, attracts a lot of attention. A sparrow might flit past nervously. I once had a great horned owl mistake my brother’s stocking cap for a rabbit, and it attacked quite viciously. (I was fooling around with a coyote call at the time, which makes a sound like a wounded rabbit.) So when you say that “a bird” flew overhead, I don’t know what the devil you really mean….”