This is really helpful! (I find myself coming back to thing when inserting big sprites)
But i do have one question: After inserting a sprite of Mewtwo and gone through each step correctly and then restarting UnLZ, why is the Mewtwo palette there but not the Mewtwo sprite (The original sprite is there instead)?
I've played my rom and it has the correct image within the game, but UnLZ doesn't.
Is this a bug for UnLZ or is there a problem with the offset i used? :\