First of all a screengrab tells more then a 1000 words.
How many lights did you use? Wild  guess; too many.
What are your render settings?
Is it an indoor or outdoor render?
If outdoor? One infinite light, with BB"s sfere and IDL will do.
If indoor, completely other ballgame.

For tests, do area renders, saves a lot of time.
and yes, agreed, eyes are the most difficult part to get right.

HSV is a node in the mat room, you can plug it to change Hue, Saturation and Value of a texture. Page 251 of the manual.

Poser 1, 2, 3, 4, 5, 7, P8 and PPro2010, P9 and PP2012, P10 and PP2014 Game Dev
"Do not drive faster then your angel can fly"!