No one brought it up here but I saw your bio. Are you a licensed appraiser?
Assuming you are, here a few points, assuming you are a first time reviewer.
1. Though I would never advise you to NOT take a reviewer course, your expertise is enough.
2. As said here earlier, you are not reviewing a person, just the report. As such, you need the FULL report, , not just page 1 and 2. If it is a purchase, you also needed a full copy of the purchase agreement to check the OP’s data and fulfilness of the comments.
3. A field review entails a photo of the subject from the front and the street as well as a photo of all comps used in the report.
If you disagree with the comps used, take photos of the comps you want and fill out page 2.
4. Don’t just check boxes. They are paying for not just the form but your analysis. Tell them the “good, bad and the ugly”. For instance, if you totally agree with their description of the neighborhood, say, “the description of the neighborhood was well defined”. If you think something was not right or missing, say so and MOST IMPORTANT, say if it affected the validity of the report. For adjustments, keep in mind that you only have access to the report, not the appraisal file. Do not say that you disagree with the adjustments unless you can PROVE THEM wrong..
5. For factual inaccuracies, I.e., zoning, and public information, point it out and say if it affected the results. This also applies to the comps. Note: for GLA differences with the subject, if they are minor, I always point out that, “I didn’t measure the subject property so I defer to the appraiser”.
6. Your final reconciliation is VERY important. Summarize everything and end with if the report can or cannot be relied upon. Analyze the difference between if you would have done something differently or if the appraiser is actually wrong.