Poorly done low res face. Your source images were much higher res...suggest you take the time to re-do this. The idea is good.

Cool idea. You need the metal thing on her arm

Author, this surely has potentional. Just fix the hair (good visible hairstrings, your source is great for that) and the eye (get real eyelashes, real pupil, check how highlights and shade work in a real eye + make it look a bit less blurry under), listen to kyricom and you have some cool character! Original pick of subject! Good luck!

Thanks for your comments and feedbacks!!
I gave it another try with your suggestions, hope it looks better