Hmmm, what if we don't talk about vanity... but rebellion? >
MOHAWK TIME. ...okay okay up to your decision xD Asymmetrical hairdos sound good, as long as you don't stuff tons of distracting details there but keep the simple wholeness.
And also, many people wear jewelery/accessories out of emotional values and sometimes even due to practical purposes rather than due to wanting to look fancy (like I do: I wear a cross around my neck as an emotional reminder of my nice confirmation camp and Christian values, and war a fancy watch (a gift) in my wrist since, well, I want to know time xD).
A couple of ideas: That if she wore a high ponytail with a biiiiig, unique hair accessory? (Something prominent but easy, like an unusual (but not overly girly) hair clip or a hair tie). Hair is kept away from her face, and the hair accessory gives some variation
Or maybe a non-hitai-ate hairband? With tomboyish badges or other guy-like accessories in similar fashion than Soul Eater uses them?
[link]Fishnets and bandages... I don't see anything wrong with them, but using both adds complicatedness of the outfit, so if the outfit is already sort of complicated, using both of them looks confusing. I would treat them a bit like fabrics with different colors and materials.
And yup, I can give a look to the new design, too! C: