Paint Scheme Test

I started painting the models and have my first test model. I have primed all of the assembled models white, and used the airbrush to put a watered down Tausept Ochre from the Citadel Foundation paint range down as my base. I then washed the whole model with Devlan Mud, though I am going to try Gryphonne Sepia. Followed up with Iyanden Darksun and then highlights with Moldy Ochre (P3 paint color) for highlighting. I'm pretty happy with the result, but I think I need to pull a little more yellow in. I don't want a bright yellow look, but not sure if there is enough there.