You can use new
GW this way:
Basecoat Bugman's Glow
Drybrush Kislev Flesh ( This color was not in their range before, but it really does the job. )
"Wash" with heavily dilluted Rhinox Hide ( 8 drops of water for 1 drop of paint )
Both the
DA Captain and Corbulo were done with this technique, but with a little more care than drybrushing.
https://www.facebook.com/media/set/?set=a.264081680356309.53795.123504387747373&type=3
Sorry the link is to a Facebook gallery, I was feeling lazy
atm
Using what you have, same basic stuff:
Baseboat with tanned flesh,
Drybrush with tanned flesh and white mixed
Wash with Ogryn or Scorched brown, or any dark brown.
I've found that Ogryn Flesh and Bronzed flesh, despite their name, with really well for stuff that isn't flesh. Weird.
If you are still struggling, I can probably make a quick tutorial about it tomorrow morning.
PM if interested.