I liked it.
I thought it was pretty good. The music was chosen well, and the pictures were simple and fitting. There are a few things that could be improved upon, as there usually are. First, the grass scene. It was obvious that the loop was just a back and forth sway; try making it a little more drawn out and complex. Make a few stalks sway a little further than the others and then rebound a little, or have a slight gust of wind; anything to break up the clump animation. In general, it's things like the separation of individuals in the background that give a flash the replay appeal. Also, I'd give it a couple more seconds before looping, just so it doesn't get repetitive. (Don't let a loop play more than twice; three times at absolute max. Usually, it's noticed by the second time, and annoying by the third) The second thing, and really, the last, is the "end." Get rid of it. In a flash like this, your ending should fit the beginning, in this case the sunrise. Ending with a back screen and type cuts off the viewer's thought process. A more fitting end would be a sunset followed by a fade. Fade to black is final, saying "and there you have it" ; Fade to white is reflective, asking "well, what do you think of that". Ultimately, it all depends on what you want to leave us with.
This flash is intriguing, and there is much to be said for a flash that has that value. Keep up the good work.