Without going into the depressing topic of suicide too much, this is merely a gory picture for the sheer practice of facial features.
In particular, the tense look of fear.
This was mainly playing about with expressions (being a prat infront of a mirror, then) and experimenting with colour.
I particularly like the red glow from below, giving a bloody look to all the lines, especially in his mouth.
On a serious note though, about Suicide, if you feel down, don’t be a quitter. Don’t take the easy way out – And to get my brownie points I shall direct you to:
Samaritans Support (UK)