To be honest, the fenris one...
The blood looks dull and boring, you should add a little more 'blood' effect to it, and also darken the color. I give 8/10 for that one
Bloodybell avatar is just... Sexy
9/10
The WIP one, you should take off the bottom part that is out of the box. It looks akward and throws the picture off alot. The grab should be tooken off aswell, just have the bottle sunk into the hand. 7/10