Most of those I see look to be painted textures ... heavily made up as to not show much surface blemishes, pores, and so forth. Yours, pjr99,  look better than most I've seen for sure. 
I left some comments.

Humankind has not woven the web of life. We are but one thread within it.
Whatever we do to the web, we do to ourselves. All things are bound together.
All things connect......Chief Seattle, 1854