I would point out any spelling and grammar mistakes. I would also give some tips on how to fix them if there was an issue that kept recurring. I would also point out confusion of words or wording where I didn't understand something. This often happens when you are reading, so if you aren't understanding it, there are sure to be others. Lastly, I would point out an structure or organizational issues.
It would be admiring because of how to Speaker wrote the sentence and how he said “He is the one I look up to” that also gives a hint of what it would be