I know exactly what you mean.
My background is storytelling, I used to have to entertain very large audiences for hours at a time. Now, when I write, I try to imagine I'm telling a story to people. I try to imagine what they would look like, how they would respond. Is this the first time I mentioned the cliff? Then they'll all be confused, I should probably explain it. Is he about to take a step off the ledge? They'll be confused at that too, but this time I want them to be.
Mostly it's about taking the time to build something complete. It's like a drawing, the focus might be the portrait in the middle, but you still have to draw the chair he's sitting on and the room he's sitting in. Try to take some time to build a room with your words. You're always welcome to ignore the prompt and just to write, if you'd like.