A weight of ~1.0 is recommended (You might want to adjust the weight depending on your model). Feel free to experiment with other weights and share your results if you want to!
The main prompt is "MasterNemesis". Sub prompts are: "dark skin, long hair, two side up, hair ribbon"
For her outfit try the following prompt: "MasterNemesis, dark skin, long hair, two side up, hair ribbon, choker, black kimono, sash"
Let me know if you have any issues.