G'day Down below, maybe, 'they' (Amati) supply a gang of 'wee painters' in a packet at the end of the build (only if requested??) to clamber over the handrails and all the other bits with their paintpots and brushes in hand,all you do then, just sit back and watch them go for it!!! At what point do we begin?, like you say, "how are we going to do it as most of the superstructure, decks etc will probably be fitted?... who knows??!!.....but I can assume.....with great difficulty!!
I think there should have been very light etched lines, like on a 'plastic model' and a paint guide, IE, the part to be 'camo' painted described in the instructions with a 'B' or a 'W' tag, again like a plastic kit!, therefor when all the pre-painting of parts is completed, (and let's face it, this HAS to be done!) the parts can then be fixed in place and all the 'camo' patterns should line up with each other 'neatly' and therefor be correct and looking somewhat like it should in the photo's!!.........Dave