I basecoated the bloodied areas with Liquitex Hooker's Green and then I used different shades of DeltaCeramcoat, something like Lime Sorbet and Apple green or something or other, and I mixed in some high gloss acryllic gel (Golden or Liquitex are fine) so that it looked thick and had some substance to it. I then finished it off with a few coats of high gloss varnish from Games Workshop (they call it 'Ardcoat).
Hope that helps!