What part of the creation process is the most fun and easy and what part is the hardest?
The hardest is always coming up with the idea. Once I get the ball rolling, the process proceeds quite naturally. It's a bit embarrassing, but sometimes if I can't think of anything to draw I'll either: a) sit there staring at my screen hopelessly willing an idea to come forth or b) draw a ton of awful sketches until I settle on something that works.