The animation is a bit choppy, but that's nothing more time and funding wouldn't fix.
I am concerned by the style discrepancy between the (animation-simplified) moving characters and the admittedly beautiful (static) background; It's interesting, but could you sustain it as commercial production speeds?
Perhaps instead of pastel-chalking the outlines during close-ups, you could use pastel-chalked fillings for the fur & feathers, and straight-penned outlines. That way, you could prepare de character's fill-in colouring as a set static drawing, like the backgrounds, and use the animated outlines to cookie-cutter the fur & feathers into the background scene. My point being, you "harmonize" the character styles with the background style while producing lots more frames & movements in the same amount of drawing time.