Well done, but I felt like it was missing something. Art, audio, acting, animation are all well done, but I can't quite put my finger on what wasn't working. Usually for me the 'cinematography' needs to pull me in, and I'm not feeling it here. Another reviewer mentioned too many close ups, and I'm inclined to agree. Some wider shots would give us space and environment clues, and can be used for better visual metaphors in certain scenes.
That said, the color palettes separating the mechanical from the living world was a nice choice. Looking forward to the next.