A mission. I looked up loads of reference, loads of tutorials and went to a museum to see Henry VIIIs jousting armour.
In the end I came up with my own palette. And it goes something like this. Please keep in mind I have lots still to do on this mini.
1: black undercoat.
2: leadbelcher heavy drybrush
3: Asurmen blue wash heavy
4: nuln oil wash light focusing on crevices
5: kill yourself picking out the highlights of the armour in Gehenna's Gold. Avoid dry brushing this. This should look like a very delicate highlight.
And you should have something that looks like this!