So, I mentioned in my Ogrun bokur tutorial, I needed to do a little mini tutorial for how I paint leather.
I do a sort of wet blending thing. In Colorado, the air is dry, so I work in what I call a “puddle.” So I try to work from a pool of water + the base colors. My colors are Rhinox hide + Troll Slayer Orange (60/40 mix), from there I work to steel legion drab, then Zandiri dust. See the picture below for the final blend.
I hope this helps