Very nice indeed...but
I like the animation that you did, very well done, and i can see quite a nice style going, but however, i think the synopsis misses the point of what and who Kaworu really is. Not that he's the 17th and last angel, nor the messenger of free will, but ultimately what he meant to Shinji. Shinji never really let anyone into his heart. Kaworu seems to be the only person who came that close. Both in context with having achieved an Angel's goal, and having entered Shinji's heart. IMO, at least.