This is a time-consuming bit-- framing out the windows. The pieces in the kit (simple frame pieces) were un-retrievable, as the die had not cut all the way through, so would have had to destroy them to extract them from the sheet. I opted for matboard framing, doubling up thickness on the exterior frame and the sills. It will look nicer anyway.
Got the door frames prepped-- no, I won't leave that exposed cross-bar wood like it is! And yes, I realize that the windows don't have sashes or stiles. They are sash-less stile-less windows.