I removed and rebuilt the front window since the last update, it now looks more correct compared to photos.
Also have spent a lot of time shaping the edge around the roof, and shaping the line where it meets the body.
Though the work appears maybe 95% done it will still take a few weeks to finish. Saturday I should be able to respray the white roof, when satisfied its good enough I can then fit windscreen & wipers, then fit the upper cabin to the body.
Then comes the job of fixing the rear doors, and ensuring all joins between upper & lower body are as good as I can make them.
I also have to add a 'red cross' lamp to the front of the roof.
And need to consider whether to add a roof rack and rear access ladder to the roof. Most of these Horch ambulances don't seem to have a roof rack and ladder.
Then weathering, decals, etc, as well as some improvements to the kit parts suggested by Ilian.
All up still more than a few hours work left till its done