Draco rolled his eyes, staring at the ceiling. "Oh please," he drawled, "take all the time you need. I'm quite certain that you'll have leisure moments at the Ministry to make sure you're ready before they look at you, trying to see your every insecurity."
He shifted his stance, arms crossed, glaring at Harry. "For Merlin's sake, Potter, I learned this when I was sixteen." Technically. In truth, the groundwork had been laid since he was a child, and Occlumency built on the natural shields Draco had developed. "I'm not going to stop until you've mastered at least the absolute basic shields in your mind. So get ready." The last words were firm, wand out and at the ready.