From first review to final revision

Follows your arguments, derivations, figures and internal references in detail to find logical, conceptual and factual errors.

Checks that each work you cite exists and says what you claim it says.

Finds published work your claims about novelty and credit leave out.

Flags passages that make your reader work harder than they should.

The few decisive issues in your document, assessed as a whole.

Every comment tagged by severity, category and fix effort, so you know where to start.