First of all, it’s important to remember that your professor is looking at your paper through different eyes than your Writing Center tutor did—with knowledge of the course, the material, the assignment, and simple personal preferences that will always be individual.  Writing Center tutors know this, which is why they never predict what your grade will be.

Secondly, Writing Center tutors meet you where you are in the writing process and help you move to another place in that process.  Perfection is probably impossible (for any writer), but our goal is always to help you improve.