I already have the metal models and they are painted and finished.
Using components from the Stormboyz metal bitz I am converting some plastic Ork models into Tankbustas.
The middle model has an Orc Warrior shield arm, which I have drilled a hole through the fist. I then cut one of the Stormboyz grenades in half before putting the two halves through the hole and sticking them with superglue.
I start off with a black undercoat and then do all the metallic bitz with a drybrush of tin bitz and chainmail.
This unit will also have an Ork with a converted Rokkit Launcha.