After spraying the plate white, it got a wahs of 2 parts brown ink : 2 parts yellow ink : 4 parts water.
Next followed a drybrush of buff.
The final drybrush was white.
This is how the underside of the tunnel looked at this point.
To make it blend into the ground / skull plate all around, I put a thick layerer of sculptamold onto the bottom.
I then set down the tunnel and blended it with the base.
