1. You quickly realise if you stumble over words, so will your readers, so out comes the editing pen again. Always better though that this happens before you submit the story anywhere. By reading the work out to yourself before submission, this acts as another editing layer and can save your blushes!
2. You literally hear the rhythm of the story. There should be a natural ebb and flow to it.
3. Especially if you write in a genre where you're inventing names/place names etc, you can literally hear if what you've come up with is pronounceable!! So no more Xxxrbtrzog (try saying that sober yet alone if you have had alcohol!) but something like Xerstone is "do-able" and still conveys to a reader they are in a setting NOT of this world.
4. As you listen to someone else's work, take note of what makes a real impact on you. Is it the power of the dialogue? Is the sentence structure hitting home well? I usually find short, simple, and to the point works best.
5. As you listen, watch out for where you are anticipating what comes next. What MAKES you wonder what comes next? Can you apply those thoughts to your own writing?
6. We all love a story, it's why we're writers, and the oral tradition of storytelling is fantastic. Without it we would have no stories at all so it is a joy to take part in and kind of "support it" ourselves.
Love your reading!