"Uh," Steve says lamely. Sure, it makes sense. But he doesn't really think he can do it.

He lifts his arms - er, arm, since the other one is stuck next to Loki's, and tries to make himself a frame with which to slowly envision the magic.

He supposes it helps that he's had to do this in small parts, weaving a single line of magic in on itself. He'd never imagined he'd have to apply it to a shirt.