Here is the tutorial based on my previous work (I used it's PSD file for it). That's my own digital painting way and actualy a mix of different styles. The latest 14 works were made this way.
*I don't have Photoshop in english so I tried to translate all the options. I'm sorry if sometimes there is not prooper translation but I hope you will understand what I mean anyway
Hope it's clear enough. In case you don't understand something, feel free to ask question
Texture tutorial [link]
Color adjustment tutorial [link]