Proofread Final 38k-Word PDF - OOL

I have a 38,000-word PDF that’s already been through a professional proofread, yet a fresh set of eyes keeps spotting the occasional slip. The text is a collection of short lessons and anecdotes, and the publisher now works exclusively from this locked layout, so all work must be done directly on the PDF—no Word conversions.

Your task is to comb through the pdf file in US English, catch anything still lurking—spelling, grammar, punctuation, plus any phrasing that feels unclear or awkward—and mark it for me to review. I don’t need you to rewrite; simply highlight the problem area and leave an in-context comment suggesting the fix. The underlying text should remain untouched.

Deliverables
• The same PDF returned with every suspected error highlighted and annotated in comment boxes.
• A brief summary page (optional) if you notice any recurring patterns I should know about.

That’s it. If you’re meticulous, comfortable working solely inside Acrobat or similar PDF-annotation tools, and can turn this around promptly, I’d love your help.