The focus looks sharp at the base of the drop. Perhaps your f stop was out? From memory, I think you need about f11. I can't see your camera info in the Exif. This looks lovely in blue.
@nicknac@888rachel Thanks Nick and Rachel, I think it was a combination of wrong settings. I used f/6.3 at ISO 200 with 1/250 sec to sync with the flash. I should try shooting straight on so it is all on the same plane and maybe look for a better tutorial :)
I think about trying this again but then remember the work it is to set up and actually accomplish so just decide to enjoy viewing your hard work instead. I like the blue liquid.