I use to be into that kinda stuff, I started cutting at first I would use a razor blade most of the time.
Eventually my scars got noticed and i had to start hiding it better. I got creative and tried punching my legs, burning my self with cigarettes, I even tried pouring hot candle wax on my arm.
After a while i just lost interest, it doesn't do what it use to do for me, I got sick of the scars too.