Applied Visual Design: Creature by Adding a Subtle Pattern as a Background Image

Is the background image pattern so subtle that we can’t see it? I got it right but I couldn’t see it.

on todays monitors it’s very subtle all we really see is a darker color. I tried to zoom in and then screenshot it but it wouldn’t do it.Still, if you zoom in to the dark side of the uploaded png then you can see a pattern.

I see it, it is subtle but is there: