Just relax. Easier said than done, but Falcon tries his best, simply... standing there, and, as, Hamuko suggests, looking at one of the nearby lanterns. If only so he doesn't have to look at her taking the picture, and think too hard about it...

Click!

After a few moments, the camera makes a noise indicating it has taken a picture, and Falcon glances back. Unlike modern devices, this one won't show how it turned out immediately, so he supposed he'll have to wait.

"... Are you done now?"