Ok here goes,
First I painted the skin eshin grey then I did the outer scales in mephiston red, next scales adjacent to the outer ones evil sun scarlet, then troll slayer orange then back to evil sun and then mephiston on the ridge, the tail was based mephiston then troll slayer orange then averland sunset, wash the whole model in agrax earthshade.
Take dawnstone and using a medium size dry brush highlight all the skin once dry take white scar and a small dry brush and highlight the knees, ankles, chin and forhead.
Take troll slayer orange and dry brush all the scales, might need few coats, I wanted it to look dirty so left shading were I could, next take yriel yellow and brybrush the full tail and the scales on the mephiston red ones, try to lighten your brush strokes as you move up the model, next take flash git yellow and do the tail paying more attention to the horns same with the ridge horns and the edges and its head again lighten your strokes as you reach were yriel yellow ends, you want to leave an edge between each shade.
Next take sreaming skull and with a small dry brush hit all the ends of the outer scales and horns, then do a final dry brush right on the ends with white scar.
Take waywatcher green glaze and apply to his legs and belly.
Claws, base with zandri dust then add a layer of screaming skull leaving some zandri dust showing, when dry apply white scar right on the tips, when that is dry take dryad bark water it down about 7/1 and take a small detail brush and apply at the meeting point of claw and toe.
Teeth exactly the same but I paint all the mouth with a mix of mephiston red and black, then do the tongue bugmans flesh, when you apply zandri dust on the teeth try to leave a bit of red to act as a gumline.