[He inspects her stance, noting that is was good, but he wants to make some small adjustments.]

Here, widen your stance a little, and raise your arms up just a little more.

[Ajax places his palm under her hands, lifting them up right where he thinks is the proper place, before nodding. He hands her the box of bullets he'd previously grabbed, opening it and holding it for her to take bullets out.]

Just like that. Now, go ahead. Put your ear protection on, load your weapon, and aim at center mass on the target. Fire as you breathe out, and pull the trigger slowly so you don't jerk the gun. Let's see how you do, Lumine. Maybe you'll impress me, haha.