Clint's eyes were wide as he met Phil's gaze. This was basically going as well as he could have hoped it would. He was still a little worried that, after being with Steve (and Bucky), Phil might realize that he was settling for Clint when he could have something much better, but he also really wanted to do this for Phil.

He nodded once, "Yes, sir," and smirked just a little. That part, at least, he had no hesitation on. Phil giving orders was invariably hot.