Hello,
attached a photo of the first steps of the painting, the following colors were used:
Underpainting (Primer): Vallejo Model Color 70.991 Dark Sea gray
It continued with oil paints from W & N series Artist:
Base: Umber natural, 2-3 times almost watery over the entire surface, and let it dry.
1. Lights: Warm gray
2. Lights: Warm gray with Naples yellow light
3. Highlights: Naples yellow light
Result: