For my submission in this category I decided to perform some stained-glass art.
I used professional glass paint, Marabu Glass Art
which is weather-resistant and smudge-proof, so it will stay there for a while.
Then, while planning what to draw,
I invented a word, "Roobat", I was so happy about my invention, and was going to name my art piece "RooBat", but then I googled it, and it appeared that there was such a word already, so now I'd rather call it "Untitled".
Here's the pictures of the final result:
I hope, it looks scary enough.
Roobet username: Betwrong
EDIT:
Took this picture in the middle of the night.
EDIT 2:
This is how it was transformed closer to the date.