Mouse Guard Hogwarts Havk

Take a look at this!
http://davidpetersen.blogspot.com/2015/09/hogwarts-rpg-character-illustrations.html?m=1

I really want to know more. Does anyone have any leads or a direct line? I think the play would be easy I would just need help to develop characters. The character sheet on the page looks great and I love the idea of the system and setting.