for the giant, stick with what you've got and start to layer up to grey/white on the skin. I guess that I see "him" (now) with blood still running in 'his' veins, and I guess that your looking more for that classic bloodless look? And maybe on so 'fresh' looking on the intestines, again 'bloodless' undead look.
just my two bits.
Brian
just my two bits.
Brian