Since I had made the trim for the bathroom window when I constructed all the other trim for the downstairs windows, it was a fairly easy job to install it.
I had also previously made the metal flashing for the top of the window trim, so I installed that as well.
Installed bathroom window--from the inside.
Window Trim 1
Window Trim 2
Window Trim 3
Window Trim 4
Window Trim 5
Window Trim 6 (Check out the weather conditions when I was last installing window trim!)
Window Trim 8
Window Trim 9