It depends on which 'look' you are referring to in this part.
The first one, when Hatter walks into the court and looks at Alice, he shows her what's happened to him, and how much he tried to keep her presence in Underland a secret. Basically, it's a look of 'No one know's your here. I'll give my life to keep it a secret.' and he almost did.
The other 'look' he gives her when he's making hat's basically shows her how much he cares, and all of his emotions for her at once. Personally, it's my favorite shot in the entire movie, besides the Balcony at Mirana's Castle.
I hope that makes sence.
posted over a year ago
Ya mine too he is so cute and in the sence in the red queen court he look so sad that the one i mean