New arrow slit technique!!!

[Lonan]

Pretty darn creative. And it looks great.

[moom]

And, here are more examples of tiles-I-couln't-find-at-the-moment-but-could-use.
1, 2, 3, 4, 5.

I believe that tiles with a pattern according to number 2 will look much more convincing as striped shutters, as opposed to the chevron type pattern you used initially.

With friendly greetings, M. Moolhuysen.

[MrTS]

a bit late, but still. I really like this idea of yours and will maybe use this in the future! Very creative.