No matter what you do to your hair choppy, buzzed in the back as long as you have some uneven pieces framing the face your in the clear. Both of these are considered an emo hairstyle. You can also razor it in the back to have it spiky with the longer bangs for a weird looking hair cut.
You can just cut the dyed hair all over in different shapes but the hair usually is always longer in the front hiding the face. The style does not require a professional stylist or beautician. Emo hairstyles can be made by you, your best friend or your little brother.