Impressive stuff! I really love how you drew the part between the mouth and the beginning of the tentacle-like thing on the head. It makes the tentacle melt in with the head/face naturally and gracefully.
The faces of the gorgons are never really described, other than being ugly, so this could easily be what they looked like. In fact, I think I would like it very much if that were the case. Very lovecraftian and beautiful. Otherworldly.