I don't have a good picture at the moment, see below which will have to do, however I usually just start with white undercoat, base of Mephiston red, wash with carroburg crimson, touch up mephiston red then highlight in either Evil Suns Scarlet or Game's Hot Orange if I want something a bit more vibrant (generally I do not).
Just a very, very minimal Evil Suns Scarlet highlight on a test model.
Normal scale marine has Hot Orange highlight