With bonus Cadian Marbo! (at the bottom)Step 1: Basecoat

Step 2: Charadon Granite
For the boots.Step 3: Dheneb Stone
This is for all flesh and cloth.Step 4: Skull White
Lightly drybrushed over both the cloth and the flesh.Step 5: Calthan Brown
All actual armour plates were painted Calthan Brown.Step 6: Kommando Khaki
This was edged on the Calthan Brown armour plates.Step 7: Vermin Brown
This is for anything leather. Ignore the old paint pot, the color is still around, but renamed "Vermin Brown."Step 8: Bronzed Flesh
This was lightly drybrushed over the leather parts. I used to do a mix of Bleached Bone and Vermin Brown, but I experimented with Bronzed Flesh instead and it worked out rather well.Step 9: Mechrite Red
Mostly for the grenades.Step 10: Fiery Orange
This is a drybrushed highlight over the Mechrite Red grenades.Step 11: Gretchin Green
For canteens.Step 12: Iyanden Darksun
This was drybrushed over the canteens, and used for the sergeant chevrons on the sleeve.Step 13: Boltgun Metal
For all the metal bits.Step 14: Shining Gold
Imperial Eagles and knife/bayonet hilts....ok, we've built up the model pretty bright, complete with highlights. Let's bring it down with washes. Washing after a highlight also works to soften harsh highlights and bring it all together.
Step 15: Badab Black
Washed over the boots and Boltgun Metal bits.Step 16: Ogryn Flesh
Washed over the fleshy bits.Step 17: Devlan Mud
This was washed over all the gold, cloth, armour, canteens, leather, and red grenades. Pretty much anything you haven't covered already with the previous two washes.Step 18: Skull White
Shoulder insignias.Now with the model basically done, I move on to the base. Since Guard is a horde army, I'm going for a very minimalist base. Urban streets.
Step 19: Charadon Granite
Basing the base.Step 20: Fortress Grey
Drybrushed and stipled on the base (hard to see in the pic). Drybrush to get the natural texture out of the base, stiple when you need more.Step 21: Iyanden Darksun
Street paint. Crosswalks, lane divides, etc.Step 22: Devlan Mud
Now mud it up.
It's a relatively low number of steps, which suits me fine given how many guardsmen I have in my future ;PI never was a fan of the traditional Cadian scheme of olive green on khaki (especially since I already collect Dark Angels, which is a very similar scheme). The scheme I chose was actually inspired by the game Dawn of War: Winter Assault. The 180th Cadians were this cool brown color-scheme, but the cloth was dark and the plates were light. I tweaked with the painter to lighten up the cloth and darken the plates and thought it looked awesome. And here we are, my 221st Cadian regiment.
...as promised, Marbo:
There's an Ork Tankbusta bomb on the base, to represent his demolitions charge. Marbo was painted using the same techniques as above with a couple additions. The green on his bowie knife (off of a Marine sprue) is Scorpion Green.
To represent his unique pistol, I latched onto the 'Sniper' rule that came with it. The above pistol is a chopped up sniper rifle.
The wound on his arm was a small drop of Baal Red wash on the bandage. The overloaded backpack came from the Heavy Weapons Team sprue. Marbo is prepared for anything.