This Adventure Time art instruction book teaches fans of the show how to draw the two main leads of the show, Jake and Finn. The characters' pliable limbs and bodies are deceptively simple, but animator and show creator Pendleton Ward has very specific rules on how to draw the two stars.
It is interesting to note the number of fingers Finn has, the proportions of his mouth and other elements of his character design are not fixed qualities and the rules on those are kept deliberately loose. On the other hand, elements like the number of teeth Finn has and the curve of his elbow have much stricter rules on how to draw them correctly.
This 16-page Adventure Time Art instruction book is fascinating and easy to follow, and will turn fans into an artists.