The focus on this shot could have been a bit better, though I am not familiar with your camera so perhaps it could not have been with your equipment. This was a spectacular find, but if you could have just gotten it a bit sharper, it would have helped tremendously.
I also think I don't see the need for all the negative space at the bottom of this photo. I would have cropped a bit tighter and used the fully 640 height to show the detail in the droplet.
Serendipity is a difficult concept to visualize. For me it means being at the right place, at the right time, and being lucky enough to capture something unique. Some of these entries are set up shots trying to illustrate that concept, and some record a serendipitous moment experienced by the photographer themselves. This is a particularly good example of the latter. Although it may be a set up shot, it seems as if the photographer just stumbled upon the moment.
This is a great shot. The reflections in the drop of water are amazing. This is one of my favorites so far, but how does it fall into this catagory? Great Shot