I finally did it. They have a proper ref, and share it. These girls are my twins, and they are intended to always be in every picture together. There are a handful of exceptions but those where early after I got them. There's a whole story behind them and how they came to be. But the gist is that they were born being possessed by elemental spirits which just kinda became a part of them. So that affected their colors and coats, but bodily they are identical twins. They have the same proportions, voice, height, weight, it's actually kinda eerie how similar they are while being so different. They are also incestuous lovers. They like to include others in their exploits, but they love each other more than anything.