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 "LegionSusie". You might want to add "holding, holding weapon" to your negative prompt. If you generate her without the mask add "pink hair" to your prompt.
For her outfit try the following prompt: "LegionSusie, mask, plaid skirt, pantyhose, hoodie, hood up"
Let me know if you have any issues.