Okay so I basecoat with steel legion, then I add a few drops of retarder to the other colors and add them one at a time in a wet on wet style.
You want the subsequent paints to be sightly translucent and unload your brush a little first.
Then apply the paint in steaks going in the same direction and twirl your brush as you drag it across the surface. The lighter the colors the thinner the veins and make sure they overlap and cross a bit too.
Once you have the general veins the way you like them you move onto the the washes, but you have to let the paint with all that medium dry first (a hair dryer will help if you are impatient).
Okay now comes the magic, take your wash and apply it in very heavy pooling streaks across your veins, again crossing and overlapping.
When you are done placing the last one rinse your brush off and unload it so it is a little damp and begin to brush up some of those pools and clean them up with the damp brush. You will find that the outer edge of the pools has already dried leaving a very natural looking vein pattern while the middle is much softer blended.
Let each color of wash dry before moving on the next one (again, hair dryer if you are impatient).
Last take a liner brush and thin down some white and drag little veins next to some of the more prominent edges of other colors
Carry on as you like with details after that. Mine is still a bit WIP. I need to wash some dark tones into the sculpted cracks and dry brush some rubble and add powders and the inscriptions will be a more cool grey looking color, maybe like chipped paint flaking off the marble in places.
Hope that is clear for everyone
