So how can you beef it up?
- Ensure you have enough description. This doesn't mean bore your audience, but ensure that the reader gets a good picture of the setting. After all, setting should be a "character" in your manuscript.
- Look for places where you're telling - maybe trying to move the story along too fast, and change your scene to showing.
- Look at pacing - as above, does your writing appear rushed (or too drawn out)? Do you have cliff hangers at the end of each scene?
- Are your characters fully developed? Do you know their innermost worries, their desires, their fears? Knowing your characters will ensure they have thoughts that define them, speak words from their hearts. Spending time understanding your characters will take a good novel to a great novel.