Ok, quick update.
Almost finished the Ring section now, although I plan on adding some information regarding the Smoke Stack area on it. I've left the very rough sketch of the inner workings of one of the foils on this time although I've not altered it at all. Needs completely redoing.
Next up then - redraw the foil cutaway, find a better position for it and I reckon I'm gonna spend a little time doing some decoration at the border.