Very calm, quiet.
Im not so sure bout the darkness. This is a rather calm serene piece to me. Yeah i guess it could work lik u said, but it seems only a touch of melancholy. Not so much the despair of the emptyness of no hope.
Btw, yeah. I think of ice and snow too.
And what flute did u use?
Nice job. 10/10 5/5 =)