Start with a light yellow and use a light gray to line where you want the rock plates.
Shade the edges of the lava with orange. Line the bottom edges of the rock plates with red-orange.
Shade the rock plates with a medium gray
Shade the edges of the rock plates with a dark maroon.
Blend the maroon with a medium to dark gray. Highlight the edges of the rock plates with red-orange.
Lightly use red-orange to create waves in the lava, then add white highlights. Use black to create spots on the lava plates.
Pro Tips: A red gel pen or acrylic marker works great for creating highlights on the rock plate edges.
A white gel pen or acrylic marker works great for creating highlights at the end!