My brother wanted me to prepare an easy painting guide to quickly paint his new Warhammer 40K force, the Space Marines (SM) from the chapter World Eaters. My brother specifically wants to use the airbrush to save time, but banned me from doing color modulation because he considers this technique as very complicated and time demanding. Thus, you will find here a simple painting guide for SM.  When I paint one of my Ultramarine warriors, I will prepare another more advance painting guide using color modulation and other techniques learnt from painting vehicles.      After removing the flashes with…