I'm having a problem which probably stems from the fact I first imagine my stories as movies instead of actual written material. The way I see it, when you write a book you have to add as much necessary detail as possible so that the reader has enough elements to imagine the world he/she's in contact with. Of course, some stuff must be left to imagination, but the reader must have something guiding him/her, so that he/she imagines what we want him/her to imagine. My problem is that I don't know how much detail I should add to particular scenes so that they become more interesting. For example, a facial expression, an object, even the weather. I usually either add too much or not enough. And it becomes worse when I write dialogue. In the middle of dialogues I sometimes completely forget to tell the story and focus too much on what the characters are saying, so my dialogue parts consist mostly of only dialogue and not enough detail. How can I get the feel for when I add small details to immerse the reader a bit more? And how can I make it so my dialogues aren't restricted to only dialogue?