Animation needs work, using the thick paint stencil for art and text is a common and ineffective way to get your work interested. Try making shapes on a transparent background to allow use on a detailed background. No sound/audio, nothing to verbally catch my attention. As for plot, it is something new, never really heard of some dark leaf. However it is weak, but unique. Continue working on developing the plot and see where it goes. Give it some detail, and some dialog, and I'm sure it will come along in due time. There is no rush, keep at it and good luck.