Ginormous Colouring-in

Isn't it nice when a project (eventually) all comes together?

I was asked by the organisers of our local arts festival to design a big colouring-in design to go onto 18 MDF blocks - 

My initial sketch -

The finished blocks - ready to be coloured in by members of the public at Crab Fest this weekend -

I'll be down there this weekend with my blocks - trying not to get too uptight about people colouring outside the lines...