I like the darkness of this shot. The droplets look great, and the blue/yellow complementary colors are strong. The composition feels a little static; maybe bringing the subject to fill more of the frame would help.
I have been using my 50mm 1.4 lens for a while and I am just getting in touch with this effect you've used here ... A subtle edge is the result of slowly losing focus at the perimeter as the object gets out og the range of focus ... the result is visually appealling and I like it here. I think if the center was brighter (more contrast) it would give it a punch.