“I’ve been doing it all backwards,” animator Aaron Blaise says, chuckling.It’s a joke, but also kind of true: He began his career at Disney, working on classics like Aladdin and The Lion King before serving as the director of 2003’s Brother Bear – one of the last hand-drawn films the company ever produced before switching over to computer-generated animation. Preferring pencil and paper to screens and software, Blaise left Disney not long after,…