Wow, how do you do that?
Well it's magic really, I can sell you the right incantations to do it, OR
open your pic in your favourite photo handling software, they all seem to have a modification function.
From modify, go to Exposure, then brightness.
Move the slider to darken the image, then up the contrast until you're happy with the way it looks.
Save then publish.
It's a simple process but a lot of fun and as long as you save the original separately you can adjust until doomsday.
I've added noise so it looks like flying in snow, have fun,
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