I know, it's simple. But I got in thrown in my face yesterday, and it was a good refresher.
Your notes will almost always be full of glittering generalities and be too long. You're trying to be too nice.
Lead with a true observation/example that's yanked from your life together. Then frame the remainder of the conversation around that. You'll be glad you did.
Tell them what you saw, and them tell them that's the trend you see. Then talk about how to turn it around from there.