Published projects should be for finished works, but the dumping grounds is for uploads. On the forums there's a couple of places you can post to get feedback or advice on an unfinished project. There's also a review club, but I haven't can luck with them. I recommend reading through some of the animation forum request for feedback and advice to get some ideas before posting your own question.
Also the heart beat worked in the opening, but not the whole video. The eyes opening and zooming in worked with heartbeat. The white lines on trees at the end didn't work.