Overall, I really liked this essay, and the way you captured the wind's voice. If that was even possible. But I did find a few things I think... if I was the author, I would change.

First of all, the first sentence didn't really make much sense. I'm pretty sure the use of commas would be greatly beneficial. :)
Also, I guess I'm being over picky, but you use nothingness twice.

But like I said, it was pretty good.

I really wish I could've read what your friend wrote. I love the idea of the wind writing to the raindrop. It's really nice, and I hope your friend liked the letter as much as I did.

Gave me chills!

i thought that was very clever. It would have been nice to see the inspiration but ty for the summary. Lovely use of vocabulary and ideas.