Thanks Guys...and Becca!
Let me tell you it was not a simple task, thats for sure.....
Catch the wood deck was first painted dark yellow (airbrushed), then added a bit of white to the Dk. yellow and painted random wood planks with a brush, then added khaki to the Dk.Y and repeated again.(Tamiya acrylic colours)
...and the grey edge to the lift was painted first and masked off.
Once the painting was done....the pencil came out and I ran a sharpened pencil "chisel tip' around each and every plank to highlight them, the tie down points were also picked out with black pastel chalk, using a fine cut down brush. Sections were done and then carefully a rubber was rubbed over each section to remove the excess chalk and pencil, the rubber was rubbed on another surface to remove the chalk and pencil rubbings so they didn't build up with the black and grey and smudge the decking.It is important to keep the rubber clean and only do a little bit at a time. If you do get black/grey smudges you just move on and keep going... a quick respray and touch up will fix it later...