I'm curious, but I guess I have a few questions I'd want answered. 

1) Guys ok?
2) So what exactly would the mahou shoujo be fighting? I understand if you can't be detailed, but I guess I want to know if the enemies are human or monsters, are they visible to the average human, that sort of thing.
3) What overall tone are you shooting for? Traditional such as Cardcaptor Sakura? Darker like Puella Magi Madoka Magica? Action? Slice-of-life?