Magnificent for two reasons : You know about painting and making photos !
Love the red, please could you give us the recipe !! and metal too !!...Sir
Cheers

Although my photography skills are more down to luck and chance.

The reds differ a little between the two models but here's the recipe for the blue and red knight.
Base coat GW old Mechrite Red, initial highlights done by adding VGC Bloody Red and light highlights by then adding GW old Dheneb Stone. Just need to be careful to not over do the light highlights otherwise the whole area ends up pink rather than red. I don't know what the current GW equivalents are like in comparison to the old foundation range but if I were to replace them with Vallejo I'd suggest VGC Scarlet Red and VMC Stone Grey (Vallejo's Opaque range is hugely disappointing as far as colour matching goes with the Foundation stuff!).
The armour recipe probably sounds more complicated than it is. I used a base mix of VMA Steel, VMC USA Olive Drab and a bit of black. That was then just highlighted by adding more VMA Steel. I used a number of washes though over that. I treated it like I would if I were painting grimey, dirty armour but didn't take it that far. I use different combinations of VGC Charred Brown, Imperial Blue and Cobra Leather which when mixed give purplish and greenish browns. I thin them down and wash the armour but wipe away excess from the main surfaces. Afterwards a quick glaze of black/brown wash (I use the old GW washes) helps add extra shading. I then went back and picked out the lightest highlights with VMA Steel again. A bit convoluted perhaps but it's really not as much messing around as it sounds. Honest.
