Yes, he looks way too excited, and if Robin saw it, she'd only worry even more.

The good news was that Steve did beat Billy to knocking, but partially because he was busy getting things out of his trunk. And because he was, maybe, just a bit unsure if he should knock. There's a little kid in the house. Would be rude to wake her. But then the door is opening and that solves that. Billy slams his trunk closed (oops) and heads for Steve with a duffel bag over one shoulder and a far more carefully carried canvas bag that was large and thin and carried his largest sketchbooks and art supplies.

"Casa Harrington, huh?"