I am going to do mine this week and will trace the layout from an original set, I'll make a copy for you.
Just tape it in place after making pin pricks along the lines, then dust with some black powder, remove the paper and follow it with the 3M blue 6mm tape.
If you need to know about how to create the paint effect, you can read about it a
http://paintworkz.com/Paint.html
If I can find a way to make a pdf up I will do so and post it up here. Then anyone can download and print it off.
I am looking for someone close to Salisbury who has an origianl Z1a paintset that I can trace and also convert to pdf for anyone to use. Please drop me a PM if you want to help out.
/Glyn