To make a quality comment you have to compliment the writer on what he or she did great at and the you should ask a question and try to get a conversation going. Then at the end of you comment you should send a link to your blog and say something like sincerely Galen or sawyer.
What you did right was explaining how to write a comment. How did your obsession with top gun start? Check out my blog at http://joeallen2.edublogs.org/. See you on the flip side.