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.

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.

Sometimes the things I learn making paintings or drawings - composition, colour, expressionism, texture - can directly influence the making of a film. Sometimes it's great that they are different, and simply taking a break from one medium to spend time with another, recharges the batteries and I feel refreshed.

My stuff is generally quite collage-y anyway. So it's sort-of suited to gathering raw materials like shooting actors, then making stills or animating characters, then just bringing them all together in a 3D space. That process is very close to my 2D work anyway.

Usually, the most difficult thing to do is photo-real stuff. Something that has to actually look like the real world, because it's just so difficult to do that. We're just so used to looking at the real world, our brains instantly see when something is not quite right.

So I really love this very difficult feeling of being completely out at sea. I don't know what I'm doing, and I kind of like this feeling. So I think for the moment, I'm going to continue to try and nail film down in some sort of shape where I'm happy with it.