Great work
I think that this is worth building on. You had me hooked from the beginning. Just some minor feedback for you. I'm not an animator, so I'm just giving this from the point of view of audience. I like the animation, and I really liked the style. I thought it worked very well with the tone of the piece. As you expand it, there are certain areas that the transitions are a mite slow. For example, when the ninja is sitting on top of the cliff, or the set up shot of the outside of the castle. You can make it a little quicker. But...I understand this is a test run. I'm just givin my two cents for if you expand it, which I think you definitely should. Great work. Keep it up.