[Lance is both naturally sensitive and empathetic, and on top of that he knows how much this particular process hurts from experience; it's hard to ignore Nate's reaction and keep his focus on what he's doing, but he determinedly manages. At the question he shakes his head, not looking up from what he's doing.]

We can't waste supplies, and this is more precise anyway. Pouring it isn't any more effective overall either, so just hold on for a few more seconds.

[He's carefully making sure to apply the cloth to all the wounds and not miss anywhere; an infection in one of them, especially in this place, would be really bad.

But as promised he finishes the process quickly, setting the towel aside and looking at Nate again; they're to the stitching part of things, and so Lance is not quite sure what to do next. It's probably also good for Nate to have something to focus on anyway.]

How am I supposed to thread this?

[He means the needle, obviously, but there are multiple methods for threading one--and he presumes that goes for stitches as well--regarding single or double strand, putting in a starting knot, etc.]