Umm... Stop looking for him. If you just go the right direction for long enough, he will
eventually appear.

find the striped tree

When you look for Mad Hatter for the first time you find the Cheshire Cat.

Im trying to get to the mad hatter but theres a house of cards in the way and an invisible
woman says if you can find me ill tell you a secret but i dont know how to show that i
found her. Will someone please tell me how to do it?!!!

The right direction and he will talk to you and if you keep going he will continue to talk
although you cant see him. If you go the right way you should see a blue and black tree,
the cat,chessur,will talk then suddenly appear