One of the mistakes new writers make is to tell rather than show. What that means is that new writers are telling rather than showing. In other words the new writer isn’t showing but rather telling.
It is a technique that allows the reader to experience the scene through actions and shit like that rather than the writer’s description or something like that.
If you’re any good as a writer, this is a technique you will get to grips with. If you don’t it probably means you’re no good. I understand it really, really, really well as the example below demonstrates.