Here are two of my Ork Tankbustaz
They are simple conversions, using the plastic Ork Boyz and then adding metal grenades from the Stormboyz metal extraz sprue.
They received a black undercoat followed by a drybrush of Tin Bitz and Boltgun Metal before their skin was given a base coat of Snot Green.
Next stage is to highlight the skin with Goblin Green.