#9 actually uses an image from the Internet, but of course that is allowed. Seeing as everyone's giving reviews, here's my two cents:
1. Nice, but the picture touches the edges. Not good in a mark.
2. Too realistic.
3. Too realistic.
4. Too realistic.
5. Well, I liked it. I know I'm not an artist, but I thought the concept was solid - vampire wing shape, left wing crippled, right wing strong (a reference to Darkness elemental ability to cripple the opponent while strengthening itself), forked tongue, actually looks like a humanoid figure if you look at it closely. (I made the mark, in case you're wondering).
6. Great, a solid mark design, and actually plausible in-game.
7. Looks cool, but the colours are too different from the actual mark.
8. Looks cool, but not very rune-like.
9. A brilliant mark design, if a bit complex.