After every trade, you must leave feedback. PM the other person at the end of the Exchange, letting them know if they got Positive, Neutral, or Negative. As you know, you must list all of your Exchanges on your Exchange Thread. To get feedback into it, color your Exchange. For example, lets say traded with HITR. On my exchange thread, it would look like this:
Exchange with: HITR
If you have any questions, feel free to contact any of the staff.