Well the biggest flaw I see is her hair is just cut off because this was a render that didn't have all the hair in the picture :P

Also the bg doesn't seem to fit so well, kind of empty.

My biggest suggestion would be to either hide the missing part of hair with some kinda effect like foreground or to actually draw in the hair yourself so it doesn't look half done. About
the bg, I would suggest to switch the stock and or to add in more pop and flash robotic effects that would match her gear.

Welcome back to Void SV ^^