Pic 10: The Shipyard again. The small gaps at the stern occur naturally - don't try to fight them - and they get filled in later with individually-cut fillets called 'stealers'. The curvature at the stern is pretty fierce, so I filled the shallow gap behind the last former to give the PVA glue extra purchase. There's also the phenomenon that the planks lie flat to the keelson at the bottom, but overlap it towards the top. Exactly where the change happens is up to you, but the slight step that results is, surprisingly, dealt with by judicious sanding and the later fitment of the stern post.
The planking will look pretty rough at this stage, but plenty of sanding later will fix all that.