This is really cool! Feels very Rayman Origins-y, which has been an inspiration of my own for a while now! Beautiful artwork. The only thing I would mention (if it hasn't been already) is the placement of the waterfalls in the parallax. I noticed one of them covered up a gap that I assume you're meant to jump over. Really stunning artwork though! Wouldn't mind making a game that looks like this myself some day!
I did notice it's a foreground feature so the fact it comes form nowhere sin't an issue at all; it's actually a lovely piece of additional environment to really draw the player into the location. just needs moving to the side a bit haha