Very very nice m8!! It's very artistic, and gets me thinking in that way as well. Hehe kind of an inspiration.
Just out of curiousity huh, if you take that original, and do a level adjustment so that it's both much darker and lighter (drag the white and dark triangle a bit together so that it excludes some color), wouldn't it look more like the rain is part of the picture?
Reason I'm asking this, is because the rain is very cool but it seems kind of planted on-top of the picture instead of being part of it. I don't know if it's a solution though, you're a bit better at the artistic stuff I've seen so...