3D Bas-Relief Model for CNC Wood Carving

Need a production-ready 3D bas-relief model for CNC wood carving based on my attached Geetopadesham reference image.

This is not a redesign — the main composition must remain exactly the same (Krishna, Arjuna gestures, horse positions, chariot structure, facial directions, etc.).

Requirements:
Final size: 7 ft (W) × 4 ft (H)
Thickness: 1.25 inch (32 mm)
Max carving depth: 20 mm

Important:
Preserve all original details and proportions
Only enhance background depth and layering if needed
Must be CNC-safe (no impossible undercuts or fragile floating details)
Designed for roughing + finishing passes
Deliverables:
STL
OBJ
ArtCAM-compatible relief (preferred)
16-bit grayscale depth map
DXF/SVG vector outlines
Front + isometric relief preview

This is for actual CNC production, not for rendering. Must be suitable for ArtCAM / Vectric Aspire workflow.