The poem is good, I can't really criticize it. The way you spaced the lines made it flow nicely and made it more dramatic, I would suggest that you add some more descriptions, if anything, but its fine the way it is.

Always we seek to identify ourselves, and to have others identify us as we wish.
Your poem is deep, and I do not, personally, think it needs any work.
Delightful read.

I guess this poem isn't really 'dark' but nice job. Can't criticize much cos I don't think i'm entitled to but maybe just work a little on the words? I dunno but for me i think this piece can be expanded into prose rather than poetry..or maybe that's just coz i think prose is easier.
Good job though :)