Interesting sounds
I like the starting synths, they do add a certain ambient feel from the start of the piece, and the addition of the cello also works in your favour.
I'm not too sure about the suddenness of the transition between the synth and cello to the timpani and strings at 0:15, I think that could stand to be a little less abrupt. But that aside, I do like the second section; the melody and harmonies do serve to make it feel quite ethereal. The ending also works very well-I'm not sure whether the accompaniment under the synth is plucked strings or just short notes, but either way, it works.
It's a very interesting piece; as the person below said, this would fit nicely into a flash. And as the person below also said, if you did extend this a little more it would be very interesting to see what else you could do.