I kind of liked this one. It shows the hurt a person can do to someone when they act on self-harming and mutilation.

"Doesn't now cross your mind"

^This line doesn't sound right to me. Maybe if you change it to something like, "No longer crosses your mind." You don't have to, just a suggestion. :)

"You could've been a someone, you could have had a life"

^I think you should take the 'a' out so that it reads, "You could've been someone, you could have had a life." Again, don't have to; just a suggestion. :))

I liked how you began with four-lined stanzas, then switched to two-lined stanzas, and then went back to four-lined stanzas. It really gives your poem great structure.

My honest critique: 4/5

Emotion was somewhat there, but the flow was off at times. Still a good write. 4/5