Peer Editing

In class on Thursday we had a peer review. Personally I don't like peer reviews, I understand that they're helpful, but I don't like my writing, and so I'm embarrassed   to show others. I like to read other people's writing though, so that part is ok, except I'm one of the people who thinks that everything is good and the paper is perfect, so I'm no help at all really. I don't like critiquing something that I don't know very much about and am not very good at myself.