bloody vampire

umm.... okay, sometimes i just want to make some eerie artwork, alright? so this is a vampire woman who just....eat.
well i don't know how's it turns out. and actually i cant call this a completion, because i don't know what should i put in the background. tried to fill in some color but somehow it just wont work. any ideas?
and the blood....it's a pain in the ass. it's so hard coloring it and make it look real. so, I'd appreciate if some of you would gladly tell me how to draw or color blood.