W.I.P. (Medusa) somewhere in between Picture

well, this is my first beauty... in digital art, and my first "serious" work with the wacom intuos 5 tablet i bought with such pain... (i love it)

however i'm really confused which one to decide working on..

and i fail on doing the hair and snakes... any suggestions/ideas will be much appreciated..

(original idea from a tattoo I saw on an arm somewhere around the internet)
Medusa vs Weeping Angel
Medusa Graphic Novel: Characterization.
W.I.P. (Medusa) somewhere in between
MAYA -Cockatrice Design Comission
Medusa vs Perseus