After changing the hair and outfits, I decided to paint their weapons. Here is the final result! I really like the way these turned out. Unfortunately Saturn is missing her glaive.
Changes include: Uranus' sword, Neptune's choker and wand, Super Sailor Moon's head/hair and wand, Chibi Moon's wand, Pluto's hair, choker, sleeves, and staff, and Saturn's brooch, choker, and tiara.