Last semester I took a visual development class with Anthony Christov. The class was great, and you could see a huge progress in everyone's work!
In the class we had to choose a book to visually develop throughout the semester. I read Neil Gaiman's The Graveyard Book. It was a great read, it gave me so much to work with, I totally recommend it.
I still need to finish the environment concepts, hopefully sometime soon I'll find some time. But for now here are some character concepts along with some graveyard and house studies.
Its kinda a dark story, so I was trying to go for a German Expressionism look.