Personally I am no Pro but I would turn off backfacing polygons, having it on can sometimes give your images a 2D look rather than 3D unless thats what your going for.

Next, I also don't like using texture filtering, thats just me though.

Finally are you setting the texture in the materials room or are you using automatic settings. If the settings are automatic they will probably be plugged into the gradient bump node (In the material room) Personally, I like to take a Hi Res texture plug it into the bump node (about six or seven lines above the gradient bump node and then set the texture strength(located to the left of the node icon)to a very low setting. I find .005 to .015 to be about the max for realistic skin textures. (I use .01 to .015 only on the lips and tongue for extreme close ups.
Give that a try and let me know.

BTW this pic was one I used to test a throat texture map I'm working on, but it also uses the settings I described above.