Well intended, but the focus is not there. The drop is blurred in all four pictures, too. Reminds me of my own attempts on the same subject - didn't work out in my photos, either.
It's really difficult capturing water like that, so a real nice effort, I think maybe a bit of post processing to sharpen up the water drops could be a good idea and possibly gaussian blur out the background in the fourth image.
What shutter speed / F stop did you take the image with?