I am not very good at reproducing mental images, at all, and the fact that I don't have a strong grasp on just exactly how to create the effects my mental image did makes it even harder to create an accurate portrayal. Still... I try...
I will go on and say the first things that are WRONG in the picture
A ) The right hand. It's supposed to be bigger. A lot bit bigger, actually -- if it looks like the hand is too small for the arm, it's true -- the arm is to scale, the hand is not. I ran out of paper space. The hand should probably be about twice the size as it is now.
B ) The "bottom". It didn't *have* a bottom. It just... stopped... light didn't travel any lower.
C ) The left hand and arm is a little off... it's actually supposed to be rather bony and thin. I did the fingers wrong.
D ) The posture. It's actually supposed to have more of a "bad" posture -- slumped over more, crooked spine.
E ) The wing is a bit... off. It's supposed to be a bit bigger, but I ran out of room -_-
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I will now go on to say things that aren't depicted well in the picture, but should be
A ) The body is an odd "bright black". It would be like looking at a liquid with the transparency and consistency of water but the appearance of onyx.
B ) The hair is pure white, but "dull". It isn't abnormally light or dark -- natural white, which makes it "dull" in comparison to the shifting nature of the skin.
C ) The bone-wing is a white-gray.
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Important things to note
I was in this "form" for a *very* limited amount of time and is the only one I've "seen". There is actually a lot of my human characteristics in this form, actually -- the long hair and the left arm (about the size of a normal human's arm) belong to me. It was also not a mistake for there to only be one wing -- as of right now, and as it was in the past, I have two wings, one of which is active almost all of the time (on the right side of my body), and another which is active only when I am energetically excited (on the left). There's a lot of history as to why this is, but the important thing is that the wing itself is skeletal in appearance. The sharp shard I have in my left hand is the material in which I collect my "payment". This, however, is *symbolic* -- using the blade to cut a willing debtor and thus collect his blood (which is usually attributed to one's life force -- a very precious resource indeed). It is *never* used in combat, and it was eventually integrated into the hand itself.
The lack of a face, but the appearance of a basic "face outline" was done on purpose, as well. Whereas there are no eyes, no mouth, no nothing, you can still look at the head and feel a "gaze". Not only that, but somehow, the fact he has no face is an important quality, and the "face outline" most adequately creates the "something should be here but isn't" feeling that I get from it.
It feels odd, talking about it like this, but I finally managed to recreate something that at least is similar to one of the forms I've taken. My wings also have not really changed too much (though they are beginning to now...), so this image will give an accurate portrayal of those, at least.
[If I can manage any more, I'll place them on here... -_-]