As much as I agree with everyone when they say they found the one true real Sephiroth, I just have to scrutinize. The highest level of perfection only is such because attention to details perfectly am I right? I just have to say because of the close up mug shot that didn't have the dark make up. In that picture you portray the younger and less "angry-twisted from learning his identity" that is present in Crisis Core. The original ff7 Sephiroth which I'm only assuming you are trying to mimic seems here to not be so much unhappy but just plain Gothic. Now i'm no make up artist but a good example for me to compare the proper look would be to that of a character from WOW. Arthus, basically right on the box of "wrath of the Lich King". More like zombie style, pale(which you did good) but with the signs of wear and tear. I hope I don't get shot for my criticism from your fans, which I want to restate that I am also one of them, nose bleed and all.
You are like the stunning image of Sephiroth.
Amazing cosplay! It is really great!