For the paper that I peer reviewed, I used both global and local revisions.  I made sure to correct error mistakes that didn’t work into the student’s paper.  Looking and reading through the paper, I kept an eye out for any mistakes like sentence structures, punctuation, and spelling errors.  If there was anything wrong with quotes and sources, I would comment on how to better cite these quotes and how to integrate any that needed to be embedded together.  There were also some parts of the paper where I would comment on wordings that did not blend well together or that did not sound literate.