High Poly Low Detail Head

Looking for a high poly low detail head to use as a base for a sculpting project. Found a good low poly start from http://www.thingiverse.com/thing:455885 and took it from there.

First I removed all the co-planer triangles in the STL file to make it easier to manipulate the file and fixed some non-coplaner areas on the base. Next I fixed his nose and gave him a right nostril. Then I quadrupled the poly count with a smooth quad tool to create natural curves and enhance the details and smoot