Giving actionable feedback
"Have you noticed what's lacking in your presentation?"
"No, what is it?"
"Why don't you take a wild guess?"
"I'd prefer if you just pointed it out."
"Did you even consider the feedback I gave you last time?"
"Honestly, I don't remember you giving specific feedback. Could you clarify?"
"Think harder. Doesn't it ring a bell?"
"I've been juggling so many tasks; specifics would help."
"The real question is, what isn't missing? When you figure that out, you'll have your answer."