Out of curiosity, I decided to search for the tutors myself
Here are the results:
http://careers.mcmaster.ca/tutors/search-results
There are a lot of English PhD tutors. Many of these PhD students are tutoring for essay writing, essay editing and formation/structuring (which is exactly what your looking for!).
Unfortunately, you will probably have to pay for these services. Nonetheless, seeing as they are PhD students, I would expect them to be super helpful!