This is a striking image. The contrast of the clear water drop and the blurred background is an interesting one, while the black and white color scheme serves to elegantly emphasize this. I feel like this is pretty much the perfect picture.
That being said, there are a few things that might be interesting to play around with next time: -It might be interesting to try and crop the photo to a rectangle, to make the composition feel more balanced. -It might also be worth trying to slightly increase the size of the aperture, so that the leaf is slightly more in focus.