Anita Nolan has a three-part blog post on how to make the most when critiquing the work of others:
Read all manuscripts before you arrive at a meeting.
Mark up the manuscript, commenting on what you see that you like as well as the things that didn’t work for you.
If you find your mind wandering as you read, or you’re pulled out of the story, mark where that happens. You’ll return the manuscripts, so make sure your writing is legible.
Come prepared with notes, not just handwritten comments on the pages, but one or two pages of prepared comments to refer to. The notes should include the major points you want to make. You’ll be able to quickly make your points if you don’t have to flip through the pages trying to decipher your handwriting.
Read the rest here.