its a good start sems to be dirty somehow and try to use flesh wash e.g. citadel wash "ogryn flesh" for the skin parts, and don't use too dark colors for the shadows - brown is ok to shadow with black but yellow is not know aht i mean? and also put some highlits on them - they don't need much like in the warhammer articles just a little
I've recently started an Ork army that was given to me. This nobb is from assault on black reach. If you would like to see a tutorial, then please comment and tell me. i'd love to help anyone if you need any questions answered. Cheers, Caleb