Answer:
You could start by first explaing what they did well. You could comment on how well their plot is formed. You could say, " Well done, your plot is really good and it makes a lot of sense and your story was developed well."
Then you could comment on what they need to improve on. For example you could say " Next time, you could proof read your work and add the appropiate punction marks.
So what you should say should look like this:
Well done, ( the person's name), your plot is really good and it makes a lot of sense and your story was developed well. Next time, you could proof read your work and add the appropiate punction marks. But aprt from that, you did a fantastic job.
Step-by-step explanation: