Unit 7 Peer reveiws

How do I feel about peer reviews, I do not mind getting my paper reviewed by other students. It will help me find the mistakes that I miss, and I miss a lot. I do not like doing peer reviews on some one else paper, I'm afraid that i will give them the wrong advise. I might be able to catch some of there spelling mistakes but when it comes to grammar i have a hard time with run on sentences and commas.