:D No worries!
Ratings are given after a trade is complete, they work kind of like trust points on this site. I'll leave you some feedback too! To leave it for me, you just need to visit my profile and click the tab "Feedback Score", then click the link "view complete feedback for user". Then click leave feedback for user! You fill out a form on that page rating the trade as positive, neutral or negative. That part is easy Thanks for the trade!