Base coat the entire model with Rhinox Hide Very thinned down. You can also just use airbrush for the primer and this brown if wanted.
Heavy dry brush Mechanicus Standard Grey Like very heavy. Stipple if you need to to get in most crevices. This should cover about 90% of model. You can use a large dry brush for this.
Another Heavy dry brush Administratum Grey Slightly less then last. Aim for about 70% of model. Stilple in crevices. Pic is side by side from last step. Use a smaller dry brush like a medium
More of a stipple than a dry brush of Ulthuan Grey Starting from top and hitting where lights would hit. Do not get under crevices. Aim for about less than half of model. Pic is side by side comparison
Now the final layer for this White Scar or any other pure white. Try to leave model stationary and only light stipple the areas only light would hit. So half of last layer.
Camo Fatigues
All areas of armor and fatigues in Militarum Green One coat is fine
Next hit all fatigue areas in a really thinned Loren Forest Your just trying to lighten up the fatigues some It will be barely even noticeable. So even optional
We will now start adding wavy areas of Zandri Dust Yu can ontinue using a 2 size brush for this
Now do another wavy line of Mournfang Brown
Now add in another wavy line next to the previous steps of Abaddon Black
Armor plates
Hit all armor in a layer of Camouflage Olive Green Will look very matte. Don’t worry we will darken it up a little later
Now edge highlight With Loren Forest
Leather
Apply a single coat of Gore-grunta Fur to all leather parts like straps, backpack and boot straps and garter