Yeah it was going to happen sooner or later may has well be like much sooner then later;)

UPDATED: I fix one of Marshall Lee hand, replace Fionna's black outlines with more skin color lines and more lighter colored clouds lines.

Fionna, Cake, Prince Gumball, Marshall Lee and Adventure Time © Cartoon Network

Fionna The Adventurer. - http://www.furaffinity.net/view/17784758/
Fionna The Human - Poster Style A - http://www.furaffinity.net/view/17782451/
Fionna The Human - Poster Style B - http://www.furaffinity.net/view/17782451/
Fionna The Human - Poster Style C. - http://www.furaffinity.net/view/17782501/