Once I was satisfied with the fit of the garage doors I assembled the four exterior walls.
![](https://1.bp.blogspot.com/-mqn-JHhojV0/XdKrG523JfI/AAAAAAAAEdI/JLv-Nye0TX44CA6xjm6w4KGvI2uLjICwQCLcBGAsYHQ/s320/IMG_2511.jpg)
I had some 90 degree corner braces (I think they're from City Classics, but I'm not positive) so I used one in each corner, positioning them so they wouldn't interfere with the windows or roof.
Next step: the angled front door for the "Paint Store" section of the building.