Greetings from the Career Services Office! We hope your summer is going well. We have posted a link to this "Letter to the Summers" about seeking feedback and maximizing your chance of getting an offer. The link is available here.
As the article suggests, be sure you are actively seeking feedback and working to improve. One effective way to elicit feedback from an attorney, especially if he or she is not forthcoming with details, is for you to identify what you perceived as the weaknesses and the strengths of your work product. For example, you might say that you thought your analysis was particularly strong, but you felt that your arguments were not as persuasive as they could have been. That will focus the conversation and give the attorney a way to make specific suggestions, as well as demonstrate your desire to learn and improve. [This should be done in person and NOT over email.]
Remember, it's called constructive criticism for a reason! Use it to your benefit and improve your performance.