I had a request to show how I did the marble on Alexis Polux’s shield, so I threw together a quick little tutorial. Hope you like!
I started off by undercoating the shield (and the rest of the model) chaos black
The next step was to airbrush Tamiya Flat White over the shield. This is done holding the airbrush from about a 45 degree angle above the shield, angling the spray downwards. This should keep the chaos black in the recesses to maintain the shadows
Next, lines were painted across the shield using Nuln Oil. More thinned down Flat White was then airbrushed gently across the shield, dulling down the lines. As before, the airbrush was held at an angle to the shield to maintain the darker colours in the recesses.
Fresh lines were again applied using Nuln Oil, some over the original lines and some in fresh places across the shield. Again this was dulled down using the thinned down Flat White. This process was repeated several times, in order to add a feeling of depth to the marble.
Reikland Flesh was then added sparingly, running along and around some of the existing lines, but not all of them. How much Reikland you apply is up to you, depending on how much colour you want in the finished piece. I added Reikland Flesh lines around about half the existing black lines.
Druchii Violet was then applied, focusing on the junctions of the various lines. These junctions were then further emphasized with small amounts of Abaddon Black
Flat white was airbrushed on a final time, dulling down all the colours and bringing them all together. Again, use the angle of the airbrush to maintain the shade in the recesses. Hopefully the marble should have a lot of depth to it as well as some faint splashes of colour
A heavily thinned wash of Steel Legion Drab was applied across the whole shield, and then the rest of the details painted.
This technique was heavily based on one I found at M-K Painting Studio, which you can find here. They’ve got some great stuff and I highly recommend you check them out!
Hope that helps guys and if you have any questions, just let me know!