Tower roof covering, chimney

 I decided to go for a metal roofing look, like the New England photo I found, for the tower roof covering rather than attempting shingles on the narrow points.  I used the pattern I had traced of the roof triangles prior to assembly, and cut out segments in two pieces to simulate metal sheets overlapping.  The seams were covered with narrow strips of kraft paper scored down the middle with an embossing tool.  I glued it all on with solvent UHU to avoid moisture warping.  For the top, I dug around in my stash and found a jewellry finding that looked similar to the scalloped tips in my New England photos with a little plier squeezing.

Then I sprayed it black.

Then I gave it a wash with dark grey paint, and a drybrush with Patina coloured paint to create a weathered metal look.  I finished off with a protective spray of matt varnish.

The finished result.  I like it, it looks less 'twee' than shingles and also a lot neater.

Chimney

I covered the chimney pieces from the kit in brick paper prior to assembly.  Because I had added a back to the chimney, my side trim pieces needed to be recut to be a little longer.  Then I glued all the pieces together as per the kit instructions. This also got a protective spray of varnish. The flues that come with the kit are quite ridiculous, wo instead I added some low-key cornice trim used upside down to the top then painted that and the interior matt black.

The chimney glues into a slot in the roof.  I will need to fill and finish the underside of the slot in the ceiling of the attic room now.

I've started drawing lines on the roof to align the shingles.  I've hit the usual problem with two roof planes intersecting - the eye expects the rows of shingles to line up across the valley of the adjoining roofs, yet due to geometry, the hypotenuse of the resulting triangle is much longer so the intervals between shingles on the middle roof are significantly further apart than on the gable roofs.  Plus it's hard to get the gable roof lines to match each other since the starting points aren't the same.  I will probably end up just eyeballing it which is what I've had to do on past roof jobs.