I think the two jobs I dreamed of doing as a teenager were comic book artist and record cover illustrator. Maybe film director was in the mix as well, but that seemed to be an impossible mountain to climb.

The filmmakers I really love are the ones that let me look through their eyes for a while. They have an aesthetic and social point of view.

PhotoShop is a program I use all the time with my 2D stuff. And that's an extraordinary program - you really can do anything there, and I've never hit my head on the ceiling. The 3D stuff is incredibly complicated, monstrously complicated, but for the things that I want to do, I've found very simple and interesting ways, I hope, of making images without getting tied up too much in the maps and technicalities.

I tend to be known for different things. I mean, there are a lot of comics or sci-fi fans out there who sort of think of me doing that kind of work, but there are just as many people who like the CD covers I've done, or the children's books I've done. So different people like different things.

But actually making pictures to look like my pictures, I've done it for so long, I'm kind of used to it now. So at the beginning of the process, designing and storyboarding everything, I sort of did all that. And then designed the characters, and doing the textures for the characters, and the texture maps to cover all the animated characters and the sets, I did those, because that's where my sort of coloring and textures get imprinted on the film.

I kind of enjoy the limits. If you've got no limits, you can do absolutely anything, it's very difficult, actually. I always enjoyed working with machines like color photocopiers and letter-pressing type settings, things where the limits are very apparent. You push the machine to do something, and it tries to do its best, and it usually has wonderful qualities all of its own. Then you get a sort of dialogue going, and the limitations become qualities.

When you just get fantasy stories that are about fairies or goblins, I just don't care. I'm never going to meet a goblin, it doesn't mean anything to me. So my definition of fantasy is very broad, it's anything to do with memory, or dreams, or ways of interpreting or making sense of the world.