Continuity mistake: When Tweedle Dum and Tweedle Dee are telling Alice the story about the walrus and the fisherman, when the walrus has the oysters in the hut and he looks at the menu it is right ways up telling you that oysters are being served. He then places it upside down on the table so the menu should be upside down writing however when the next shot comes in the menu is the right way up.
Continuity mistake: In the song 'painting to roses red', after Alice sing 'Oh, pardon me, But Mister Three Why must you paint them red?' the three cards say 'Huh? Oh!'. When they say that, The three of clubs card has a three in the bottom right corn with no clubs symbol on top of the three. the three of clubs also has nothing in the top left corner. The Ace and 2 of clubs have nothing in both of there corner. A few slides later, the symbols in the corners come back.