Kind of random but: Latest version: V1: Spoiler Keep in mind it's meant to be a wallpaper CnC pls You can download here if you like.
Pretty cool concept, but I would try blurring the shadows a bit and doing something that makes Calvin & Hobbs blend a bit better with the background, making them look less like they were copied and pasted into the scene.
The lighting doesn't really make sense, there would appear to be a very strong, low angle light coming from the left based on the shadows, almost a light straight up, but with no reflection on the characters and the background is more or less getting its light source from the vanishing point on the horizon.