All textures are hand painted/sculpted in 3D, with no use of photographs other than a bit of help in color variation. Zbrush was used for sculpting the details and laying them out in 2.5D and Photoshop was used to composite and paint the colors in. Height maps that are included in every set will be utilized in order to blend two textures into one shader, which will be presented in future posts.
Maya Hardware renders:
Below is a Playblast flythrough with a moving point light to showcase normal map strengths: