Update 8th May 2013
Here is the first hand drawn plan. Based on the train length I drew up Lorim Point to suit. then based on the construct 9 I had - drew up all the way to Andoom. Andoom and train length again determined the length.
Once drawn I then did some basic thinking of structrues. Particularly the bridges. Andoo Creek was initially draw too long. Next was drawing the basboard. I decided 2ft width. Not needed but the scenery for this is needed to dwarf the trains. If the modules were too thin, which would be good for transport, not enough of the weipa landscape would show.
After drawing the plan I then used a fine ink marker to draw over he pencil.Then I tokk a photo of the drawing to then enhance it on the laptop, and of course share it here.