Time for the Commander's cupola.
These are the bits needed:

Extreme care is needed (don't do it with the jitters


Later, I aim to paint the periscope apertures black, and then cover them with some reflective perspex (maybe some cut out from transparent plastic food containers..the sort you get your cream cakes in).
Meantime, the sides are looking OK with the temporarily mounted Mantlet in place:

Then with the top plates fitted. Note: only the front part of the roof has been bonded in place, partly to help with alignment, but also because I aim to have the rear section held in place by magnets, and three plastic lugs. This will allow me access to the gun assembly and wiring later on.

As the rear section of the roof is going to be detachable, the cupola is only bonded to it, and not to the front roof plate.