First of all - thank you very much for all the kind words

Secondly - I paint by applying clear base colors on a white undercoat.
Then I use Gw & Vallejo washes. Fast and very effective method.
Thirdly - the skulls on Archaon stand come from undead bone thrower and from the usual skeletons regiment.
Fourth - soon: second unit of chaos warriors, chaos dragon ogres, harpies & two units of Khorne bloodletters (used as marauders).
Archaon and the dragon must wait...
See you soon.