I'm not sure what to think of the cloud slow-scrolling on the third scene instance, or the cloud choices used. And also, anywhere else, really.
There's too many clouds. It's distracting and noisy.
Ground is too noisy as well on the first scene. I was expecting something more dynamic when the animation was by itself.
The scrolling really feels off for some reason.
In the first scene, you could try slowing it a bit.
In the third scene, I'd suggest a different and more dynamic layout, to aim the eyes into the character as she flies through the air. Composition matters, everywhere.
Ground and distant forest could do with improvements as well, especially the ground when she leaps. Play around the shadow before the leap, as well as having the ground zoom out accordingly at the right timing.