Good things come in narrow packages

[faraway]

...Minor progress.....

Great progress. Did you "simply" paint the flanges? I looks good. I guess I did think to complicated when I searched for a solution to continue each and every stone around the flange as styrene kits do.

You did concrete sills. Do you have a solution how to do brick sills as they are common on older buildings? The bricks should be vertical aligned side by side.