This piece is nice and tall. It will be a nice line of site blocking terrain.
The cards are going on better. I am getting the hang of placing the cards and getting them to stay down. I have reinforced the doors so they are solidly attached.
I ended up adding the alcove sills. When building I wasn't sure if I wanted to but after placing the detail cards I saw there was an outline making the placing of the sills easy.
Next up assembling the HQ.