mmmmmm
mmmmmmmmmmmmmmmmI love itThis adds a lot of much needed visual diversity to the game. If I wrote down everything that I like about this I wouldn't be done by the time the game is finished, so I'll just say that the thing that stands out most to me is those static/noise clouds, and how you were smart enough to only give the texture to a select few clouds instead of trying to make all of them like that and ending up with a blob of static, which is probably what I would've tried to do. They're really creative and fit the tone of the game perfectly.
If I had to give some criticism, I'd say that while the art style definitely benefits from the parallax, it sort of clashes at first glance. Kind of feels like it doesn't belong there. To combat this, you could add some light gradients along top of the front layer to sort of blend the lighting. Maybe something along the lines of this...
Just a suggestion; I know this is still a work in progress. I'm so happy you're adding these little visual touches, they're really great.