Syaoran struggles to stay awake and standing as he helps reassure Sakura. This is from the card changing scene in episode 69, though it's missing the Sakura layer. After this shot, he breaks into a smile. His smile is great, but I really like his determined, grimacing face here too :)

Angelic-Lair has a nice shot of Syaoran beginning his aforementioned smile in this A2 shot.