STEP 1:- Undercoat the model in white. I use GW, Vallejo or Army Painter aerosol paint because it covers well, in an even - not too thick coat - and dries quickly. Ultimately the model will be based. In the picture the model is stood loosely on its 40 x 80mm mdf base. To prepare the base it was coated with Vallejo Grey Pumice which when dry, was painted with Earth Brown acrylic paint and finally dry brushed with Vallejo Sand.