Take a peek behind the scenes at World Of Arthur Cox - the firm that made the fab animations for The Worst Thing Ever? Here are the artists - Felix and Emma.
They looked at drawings done by Peter - the boy who plays Darren in The Worst Thing Ever? His handwriting and artwork are used in some of the animation.
Time to do some doodles. Emma sketches her plans on paper.
Then it's on to the computer, where the paper drawings come to life using whizzy technology.
The animators are in Bristol, and the NR production team are in London, but they're in constant contact. Animator Sarah takes a call from Kez the producer.
More sketches. This is how the amazing animation you see on screen starts...
Emma and Felix have a catch-up. The project's going well!
Felix is back at the computer, putting the finishing touches to his work.
The animation in The Worst Thing Ever? took many months to make. We hope you enjoyed seeing it on screen - and you can watch it again on this website!