I used to cut when I was angry when I was a teen. Sending a pic to people would be inappropriate and manipulative and probably keep people feeling you are looking for attention. If you're feeling suicidal and need help call the hotline or go to the hospital. People do cut sometimes when suicidal but it's more like drinking or overeating, it's a coping mechanism. It doesn't always mean people are suicidal. If you send out that pic you might end up on an involuntary hospitalization so just be aware.