I like the idea, and it's really close, but doesn't quite make it. There's no curiosity or emotions that I'm finding. A tad because of the rain -- adds a bit of melancholy. But I just think there could be more to it to hit the "art" stage. Something that draws you in over and over again.
Drip... drip... drip... this moment in time capture, and frozen, still has the dynamics that were there, then. The waves radiating from each drop, the waves interacting with eachother... superimposing. The light reflecting and refracting... the shadows and highlights... it's a physics experiment being done by nature and you've captured it so well.
Better than many raindrop on water images, I think because the black/white conversion was handled in a way that helps us appreciate the resulting texture along with the shapes. On revisiting the image, I now also see a somewhat heart shaped figure of face - just right of center where the thicker dark branch leads my gaze - with two round raindrop ripple eyes, a narrow light-toned nose, light colored triangular chin. Maybe another similar face with more opened mouth a bit higher up the image. Now I can't un-see them. Lends an extra layer of interest to the image.
mysticism of the reflection, what am i looking at tress over head maybe but the duplicity of the rain spoiling the reflection and elevation it at the same time makes this shot. love it.