Thanks Kevin and Jay.
As for the spray job Kevin, I sprayed the slate grey first, that's the greenish look and then over sprayed with 'Future' before masking of with the camo paper design held down by fine strings of Blu-Tack under the paper edge. The effect is to give a soft edge to the camo as the edge near and under the Blu-Tack which doesn't get the same full blast of spray particularly if you spray from directly above the covered parts. So in this instance you sort of get a slightly lighter shade of colour on the edge.