I would tune down the saturation's on either first. Right now they look a bit too saturated and and fighting against the actual colours of the portrait itself. Either will do, just push it into the background more.
Hmm yeah blue looks better... the face? I dont know how she really looks in the photo you used as a ref, correct me if iam wrong, but if the nose is like that then i have nothign to say. But if i were you, i would lift the right nosewing just a little ^^. And maybe you shouldnt use gradient tool... just experiment! Oh and i just saw that the throats shadow maybe is alittle too black? Keep painting ^^