The C4W tutors can work with you to identify patterns of error in your writing--whether they are with structure, flow, argument, grammar, or anything else--and help equip you with the skills to improve, but we are not an editing service. Our tutors will not be able to fix every error in your paper.
If you are a graduate student, instructor, or professor, you may benefit from the academic copy editing service at the Academic Success Centre. This is for theses, dissertations, final capstone projects, and documents for publication.
Regardless of the services you access, it is important that you make the decisions about your writing. You, the writer, are in control after all.