Take that spongey thing out of the back of a blister pack.
Dab in a bit of Bestial Brown. Wipe off most of the paint. Dab on chipped area.
Repeat step usign Boltgun metal once paint has dried.
Basecoat Liche Purple. (sounds nuts i know, just do it.) Drybrush with Tanned Flesh. Highlight the nose, cheekbones, eyebrows, etc. with Dwarf Flesh. Any extremely raised peices are to be painted elf flesh with a brush.