One of my Christmas presents (from last year) was a Grey Knight Terminator with a Psycannon.
The model went together very nicely. I used Citadel sand on the base and resin and slate from the Warhammer 40000 Basing Kit. I then gave the model a black undercoat.
The next stage will be a basecoat of Boltgun Metal.
Workbench feature on the Grey Knight Terminator with Psycannon.