For punk short hairstyles you need to incorporate an unusual hair color such as fluorescent pink, green or blue. You can also only color sections of your hair or your whole head. It is possible to do color stripes, color the tips of your hair or just the bangs. The color needs to stand out so if you have very dark hair then platinum blond tips are a good choice. The main factor when getting a punk cut is that it should not be any cut that is considered mainstream. This can usually be overcome by having unusual configurations such as long shaggy hair on top and a short buzz cut on the bottom. Asymmetrical cuts also work. It is also very typical to have words shaved into your head.
Women have some facial features which will look better with short, cropped hair. Always wearing your hair in its natural way or wearing it in straight black hair? Why don't you try having your hair short and cropped?