The finished product, waiting to be composited into After Effects and animated.
I added some stylised "curls" onto the clouds to give an overall more cartoony effect, and spent time making sure that each layer was fully individual and moveable without any edges appearing.
My only concern is that this is a large file, and viewed at 100% it is easy to see all the brushstrokes and slight flaws in the painting. Depending on the distance that the background is placed behind the animated scene, it might be too visible and distracting.
I will have to sit with the others in my group when everything is being placed onto After Effects to see how it looks, and to determine how large the elements will be.