I find that it is very helpful to list the even the most simple mistake as a reminder as well as listing some positive impact moments. It goes both ways.

I have had many students in the past that is the barer of the apples. I have learned from my experience to pretty much able to tell the true value of their complements and comments. Not always 100 percent, but close. With the apple polishers, I try to focus the complement back to the case in point of the real issue at hand, and then find a way to complement on a previouse that had been completed and expecting good results on the next.

I find it is very important not only to get to know your students, but also how each one will act and react within the classroom enviroment.