Probably better addressed in postwork than inworld - I suspect having to do multiple water droplets and trails would be incredibly resource intensive, although the P6 real skin shaders out there are incredible and this may have been addressed in node and shader tweaks previously (I cant recall any such thread off the top of my head and search feature is inoperative for me, but that doesnt mean the info isnt out there)

Do you have access to a powerful graphic program such as Adobe Photoshop or paint shop pro?

Logan