Whelp, I decided to start cracking into the bastiladon, because gold effects can be easy as pie

(erm, easier. Pie's are hard)
My main process for gold bits is an offshoot of Luke's of Geek Gaming Scenics. I can't find the original video anymore, but It is fast, looks good, and exceedingly forgiving to all skill levels.
I like it so much that I am going to break it down a little since I can't find the original video to post credit for.
Basically prime the model black; dry brush it heavily with a bronze metallic paint (I use warplock bronze); dry brush it slightly less heavily with a rich red toned gold metallic paint (gehenna's gold for me); coat it with a darker reddish brown wash (keeping with a citadel theme, I use reikland fleshshade); very very lightly dry brush the highlights with a buttery low pigment yellow gold (sigmarite works, but I just fell in love with retributor armour!).
I decide to take that process as far as dry brushing with gehenna's before diverging.
I wanted to show a little bit of the illumination from the crystal's focal points in the gold as well, so I moved up to a buttery gold, and then all the way to silver in sections right next to the crystal's killer glow. I did skip using a wash at any point on the gold; I could say that I didn't want to distract from the very subtle, likely to be unnoticed glow effects, but the reality is that it was just as much the curiosity on how it would shake out by not doing it.
