My arms and legs are covered in cutting scars, I self harmed daily for 10 years and at one point was cutting on top of cuts because I didn't have any space left on my arms. I also have a large burn on my arm that I did with a cigarette when I was drunk. I'd say they're both equally bad? If you're planning on self harming you really shouldn't, having to wear long sleeves everywhere is really inconvenient. And once you start it's difficult to stop, I relapsed recently and have been feeling really terrible about it.