Pic 6: The poop deck, a nice easy bit to plank. If you get stuck on this, give the model to a friend now! Note the bulldog clips making sure that the overhangs dry in line. The two supports underneath have been steamed into a curve to match the rest of the deck.
Save some time: The instructions tell you to plank the little vertical wall at the stern, but this is completely covered up later by metal castings. Hence I can see no reason to do this part. If however you wish to keep the proportions identical, you may as well plank it horizontally - much easier.