Ahh... powerful punch to the last stanza. Sure does leave an impression. The reoccuring "The brighter the light, the darker is the shadow." keeps a momentum of the poem itself. However, the last stanza does a great job breaking the monotony of the previous lines.

"How your eyes can view me clearly

Confused, and still shaking

Hating the mirrored reflection I see

-Not something you could desire-"

Beautiful, really beautiful

the last stanza was excellent, the mood was consistent throughout. good work

keep writing