Thomas the tank cake

An icon of children's entertainment, I knew I had to get this one exactly correct. One slip of the (edible) marker and Thomas could be scowling instead of grinning!
Constructing this one felt like I was building an actual toy train. I wish I'd documented the process because certain parts had to go on before other parts otherwise it would not have looked right, but it was sometimes tricky to figure out which one had to be next.
Completing this felt like somewhat of an achievement, I was grinning as much as Thomas is!