Hey maqs, welcome to Indigo... a great stuff you post here!
We really lack in nice Character renderings atm :/
to enhance you model apereance go for some Exponent Map! Its a Map used for phong (or glossy ransparent Materials) to control amount of the exponent on the mesh by a BW map. Much Exponent = better reflections, low Exponent creates reflections less clear...
You also can Blend different materials together to get some "specular map" effekt, you can find a Tutorial here
For a nicer result some pose and a more dramatic camera angle could help a lot
The Epi-/Dermis System is really slow atm, and the need of two meshes makes it very uncomfortable to use! I think Ono is going to change it to a layered material some day, with better control via maps etc.
I look forward to see more of your renderings